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What is NPK 20-20-20 Fertiliser?
what is
what is npk 20
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What Does NPK 20-20-20 Mean?
What Does NPK 20-20-20 Mean?
Balanced NPK 20-20-20 supplies equal parts nitrogen, phosphorus and potassium for all-round plant growth—ideal for vegetables, herbs, flowers and general garden feeding.
What Does NPK 20-20-20 Mean?
Equal parts Nitrogen, Phosphorus and Potassium for all-round health, growth and resilience.
NPK 20-20-20 is a balanced formula designed for broad, dependable performance across the garden. The equal ratio supports steady vegetative growth while maintaining root development and plant health, making it suitable for vegetables, herbs, ornamentals and lawns. Use as part of a regular feeding schedule to sustain colour, leaf production and recovery after pruning. Always dilute as directed and apply to moist soil to optimise nutrient uptake and minimise stress. Avoid over-application during extreme heat; instead, feed in the cool parts of the day. Consistent, moderate use generally provides better results than infrequent heavy doses.
See moreWhat Is Cal-Mag?
Targeted Ca and Mg support for strong cell walls, greener leaves and fruit quality.
Cal-Mag provides readily available calcium and magnesium to correct common deficiencies that cause soft growth, tip-burn and interveinal yellowing. It pairs well with fruiting and flowering programs where demand for Ca and Mg increases, and is valuable in hydroponics or soft water where baseline minerals are low. Apply as directed, avoiding tank mixes that can precipitate; when in doubt, jar-test first. Regular light applications typically achieve better, more even results than single heavy doses, particularly during peak flowering or fruit-set stages.
See moreNPK 20-20-20 — What it means
Equal Nitrogen, Phosphorus and Potassium for steady leaf growth, strong roots and overall plant resilience.
NPK 20-20-20 is a balanced all-purpose fertiliser suited to vegetables, herbs, flowers and lawns. The equal primary nutrients support even growth across leaves, roots and plant health. Use during active growth to maintain colour and recovery after pruning. Apply to moist media, avoid peak heat, and prefer regular light feeds over heavy, infrequent doses to keep results consistent in pots and garden beds.
See moreCal-Mag — What it adds
Targeted Ca and Mg for stronger cell walls, deep green leaves and improved fruit quality.
Cal-Mag corrects common calcium and magnesium shortfalls that cause tip burn, soft growth and interveinal yellowing. It pairs well with fruiting/flowering programs and soft water, in soil, coco and hydroponics. Follow label dilution, avoid incompatible concentrates (jar-test if unsure), and apply lightly but regularly through peak demand.
See moreNPK Ratio
NPK Ratio
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NPK Ratio
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NPK Ratio
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NPK Ratio (Fruiting Blend)
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NPK Ratio
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NPK Ratio
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NPK Ratio
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What 4-18-38 Means
Higher P and K to drive budding, flowering and fruit quality while keeping foliage compact.
- Fruiting & flowering: Tomatoes, peppers, berries, cucurbits, roses, citrus.
- Compact growth: Low N helps prevent stretch; pushes blooms & fruit load.
- Pair: Add Cal-Mag if using soft water or growing heavy feeders.
Read More
The 4-18-38 profile prioritises phosphorus and potassium. Phosphorus supports stronger roots and abundant flower initiation, while potassium drives colour, flavour and overall resilience. The modest nitrogen helps prevent stretch, directing energy into blossoms and fruit load. Suitable for soil, coco and hydroponics. Dilute as directed and apply to moist media for consistent uptake and even results across beds and containers.
- Gentle on roots; ideal for frequent feeding schedules.
- Works with hydroponics and foliar applications.
- Complements slow-release programs as a quick boost.
What NPK 16-4-14 Means (Indoor)
Indoor NPK formula with essential trace elements to keep houseplants lush, compact and resilient. Higher N for healthy foliage, supportive P for roots, and strong K for colour, turgor and stress tolerance.
- Lush foliage first: 16% nitrogen supports steady leaf production and rich green tone without excessive stretch when used regularly at indoor rates.
- Root & bud support: 4% phosphorus backs root growth and occasional flowering on ornamentals without overloading P in containers.
- Resilience & colour: 14% potassium improves water balance, stem strength and leaf colour; trace elements maintain enzyme function and consistent growth.
Read More
Indoors, plants live in limited media and stable climates, so balanced nutrition matters. This 16-4-14 profile feeds foliage-forward growers while keeping roots active and leaves firm under variable light and watering schedules. Trace elements (Fe, Mn, Zn, Cu, B, Mo) help prevent pale growth and patchy new leaves common in indoor conditions.
- Best for: Foliage plants, aroids, ferns, palms, herbs on windowsills, flowering houseplants between bloom cycles.
- Use pattern: Light, regular feeds on moist media; reduce in low light or cooler months; resume as growth resumes.
- Plant signals: Pale, soft new growth → increase frequency modestly; dull colour or weak stems → ensure potassium is present and consistent.
- Compatibility: Works in potting mixes, coco blends and hydro/LECA routines; safe alongside Cal-Mag when water is very soft.
What 4-18-38 Means
CompleteGrowHigher P and K to drive budding, flowering and fruit quality while keeping foliage compact.
- Fruiting & flowering: Tomatoes, peppers, berries, cucurbits, roses, citrus.
- Compact growth: Low N helps prevent stretch; pushes blooms & fruit load.
- Pair: Add Cal-Mag if using soft water or growing heavy feeders.
Read More
The 4-18-38 profile prioritises phosphorus and potassium. Phosphorus supports stronger roots and abundant flower initiation, while potassium drives colour, flavour and overall resilience. The modest nitrogen helps prevent stretch, directing energy into blossoms and fruit load. Suitable for soil, coco and hydroponics. Dilute as directed and apply to moist media for consistent uptake and even results across beds and containers.
- Gentle on roots; ideal for frequent feeding schedules.
- Works with hydroponics and foliar applications.
- Complements slow-release programs as a quick boost.
Bundle & Save
Pair your fertiliser with essential companions for best results — add them all in one click.
All Purpose NPK 20-20-20 (1L)
$34.00
Cal-Mag Hydroponic Nutrients (500ml)
$29.90
Indoor Plant Food Concentrate (100ml)
$24.60Bundle Total: $88.50
Add Bundle to CartCompare Your CompleteGrow Formulas
Compare NPK Strengths (at a glance)
data-npk="N-P-K", the title and image.Choose by Outcome (at a glance)
Let Your Plants Do the Talking
We don’t overcomplicate things — just fertiliser made the right way, with the right ingredients, so your plants get exactly what they need.
You’ll notice the difference in how your plants grow — healthier roots, richer colour, and steady, reliable results. We’ve compared what’s on the market, refined every formula, and made sure CompleteGrow gives you more with less.
Let Your Plants Do the Talking
Real results show up in your garden: stronger growth, deeper greens, and plants that don’t just get by. They thrive.
Let Your Plants Do the Talking
Real results show up in your garden: stronger growth, deeper greens, and plants that don’t just get by.
They thrive.
- Healthier roots
- Richer colour
- Steady, reliable growth
Let Your Plants Do the Talking
Real results show up in your garden: stronger growth, deeper greens, and plants that don’t just get by.
They thrive.
- Healthier roots
- Richer colour
- Steady, reliable growth
Explore our blends by their actual N-P-K makeup. Each card shows the ratio bars, what it’s for, and how to use it. Update or add products by editing the list below — the layout adapts automatically.
Tip: Replace the example NPK numbers with your label values. The bars scale automatically and the “N-P-K” badge updates.
Explore our blends by their actual N-P-K makeup. Each card shows the ratio bars, what it’s for, how to use it, plus a quick add-to-cart. Update or add products by editing the list below — the layout adapts automatically.
Tip: Replace the example NPK numbers with your label values. The bars scale automatically and the “N-P-K” badge updates. Provide a WooCommerce product ID in cartId for instant add-to-cart.
Types of Fertilisers & When to Use Them
Each card shows a live donut of the N–P–K makeup. Edit the numbers on the card, and the chart updates automatically. Open “How to use” for dilution, EC/PPM, and pH guidance.
All Purpose Plant Food
Form: liquid • N–P–K 12–5–8
Balanced liquid feed for everyday care. Supports foliage and root development without pushing soft growth.
How to use
Indoor Plant Food
Form: liquid • N–P–K 7–3–5
Gentle, repeatable nutrition for indoor conditions. Helps deeper greens and compact, healthy growth.
How to use
Bloom Booster
Form: powder • N–P–K 4–11–13
Higher P & K to support bud, bloom and fruit set. Switch as plants transition from vegetative growth.
How to use
Hydro A + B
Form: two-part • N–P–K 9–4–17
Two-part system for stable pH and consistent uptake. Add A to water, then B — never pre-mix concentrates.
How to use
Types of Fertilisers & When to Use Them
A clear, “nutrition-label” view of each blend. The stacked bar shows the N–P–K mix at a glance; the table captures form, stage, and where it shines.
All Purpose Plant Food
Form: liquid • N–P–K 12–5–8
| Best used for | Everyday feeding; steady foliage & root development. |
|---|---|
| Stage | All-purpose, growth |
| Suitable setups | Soil, indoor, outdoor |
How to use
Indoor Plant Food
Form: liquid • N–P–K 7–3–5
| Best used for | Leafy indoor plants; compact, healthy growth. |
|---|---|
| Stage | Growth, all-purpose |
| Suitable setups | Soil, indoor |
How to use
Bloom Booster
Form: powder • N–P–K 4–11–13
| Best used for | Flowering / fruit set and bloom density. |
|---|---|
| Stage | Bloom |
| Suitable setups | Soil, hydro, indoor, outdoor |
How to use
Hydro A + B
Form: two-part • N–P–K 9–4–17
| Best used for | Soilless / recirculating systems with stable pH. |
|---|---|
| Stage | Growth, bloom |
| Suitable setups | Hydro, indoor, outdoor |
How to use
Types of Fertilisers & When to Use Them
A magazine-style overview. Each spread pairs your product photo with a live N–P–K ticker and practical guidance. Swap the images and numbers — the layout does the rest.
All Purpose Plant Food
Form: liquid • N–P–K 12–5–8
Balanced liquid for day-to-day care. Keeps foliage strong and roots active without pushing soft growth.
How to use
Indoor Plant Food
Form: liquid • N–P–K 7–3–5
A gentle, repeatable feed for indoor conditions. Supports deeper greens and compact habit.
How to use
Bloom Booster
Form: powder • N–P–K 4–11–13
Higher P–K to support bud, bloom and fruit set. Switch as plants move from veg into bloom.
How to use
Hydro A + B
Form: two-part • N–P–K 9–4–17
Two-part for soilless systems. Add A → water → B. Never pre-mix concentrates.
How to use
Fertiliser Application Methods
Different fertiliser types suit different application methods. Here’s how and when to apply each one for best results — whether you’re growing in soil, hydroponics, or pots.
Liquid Feeding
Dilute fertiliser in water and apply directly to soil or hydro setup. Best for fast absorption and visible growth response.
Foliar Spray
Spray diluted fertiliser on leaves for quick nutrient uptake. Use early morning or evening to avoid leaf burn.
Soil Drench
Apply liquid solution directly into the potting mix to target roots. Ideal for potted indoor or outdoor plants.
Fertigation
Used in hydroponics and irrigation systems for continuous feeding. Maintains consistent nutrient supply and EC levels.
Types of Fertilisers & When to Use Them
Bars scale so the largest N/P/K value fills the track. “How to use” sections restored.
Fertiliser Application Methods
Pick the simplest method that fits your setup. Keep it consistent, then adjust only if plants ask for more or less.
Liquid Feed
Mix in water and pour at the root zone for fast, even uptake.
- Best for: Pots, beds, lawns needing quick response.
- How: 3–5 mL/L (balanced NPK); water to slight runoff.
- When: Weekly in growth, fortnightly in cool seasons.
Foliar Spray
Feeds through leaves to correct issues rapidly.
- Best for: Deficiency rescue, heat-stressed plants.
- How: ¼–½ strength; mist both sides of leaves at cool times.
- When: Every 7–10 days until colour returns.
Fertigation
Nutrients dosed via irrigation for consistent delivery.
- Best for: Drip lines, hydro, greenhouses.
- How: Mix to target EC/pH; feed each irrigation or alternate.
- When: Little-and-often during active growth.
Top-Dress
Granules on the surface release slowly with watering.
- Best for: Perennials, outdoor beds, low-touch care.
- How: Scatter evenly; water in to start release.
- When: Every 6–10 weeks (temperature dependent).
Root Soak
Pre-soak root balls to buffer transplant shock.
- Best for: Seedlings, cuttings, repots.
- How: ½-strength balanced feed + Cal-Mag; 5–10 min dip.
- When: Once at transplant only.
Side-Dress
Place fertiliser in a band beside crops mid-season.
- Best for: Veg rows, tomatoes, corn.
- How: Apply 10–15 cm from stems; water thoroughly.
- When: Every 4–6 weeks in season.
Choose Your Fertiliser Type
We offer three formats so you can match feeding to your routine—simple weekly liquids, flexible powders, or precision-ready mineral NPK.
Liquid Concentrate
Pre-dissolved blends (single or A/B) for quick measuring and consistent everyday use.
- Strength:Convenient; no clumping; reliable for small indoor setups.
- Use when:Simple weekly feeds or when speed matters.
- Watch:Shake before use; add each concentrate to water separately.
Water-Soluble Powder
Powdered NPK (e.g., 20-20-20 or 4-18-38) that dissolves fully for liquid feed, foliar, or fertigation.
- Strength:Versatile; easy to store/ship; accurate by weight.
- Use when:Routine liquid feeding or stage-specific veg/bloom programs.
- Watch:Mix order: Cal-Mag → base → boosters; check pH last.
Precision NPK
Refined mineral salts blended to exact ratios for predictable, measurable results in hydro and fertigation.
- Strength:Fast uptake; easy to dial EC/ppm to growth stage.
- Use when:Indoor pots, hydro, drip lines, or quick correction.
- Watch:Measure EC/pH; don’t stack multiple boosters at full strength.
Complete 3-part nutrient system for flowering & fruiting plants
-
NPK 4-18-38 for strong flowering & fruiting - Includes Calcium Nitrate & Magnesium Sulphate
- Suitable for hydroponics and soil-based growing
- Supports all stages of plant growth
NPK 4-18-38 + Calcium & Magnesium
How it works
High phosphorus (18) activates bloom enzymes and early fruit set. Potassium (38) strengthens cell walls for firmness and flavour. Keep nitrogen low (4) to avoid excess leaf growth. Always dissolve Calcium Nitrate first, then add the PK mix, and finish with Magnesium Sulphate.
When to Apply: Seasonal Fertiliser Guide
Match your feeding to plant cycles. We’ve grouped the best CompleteGrow options for each season, with a quick reason why they work.
- Kickstarts leafy growth & branching
- Builds early root mass for summer
- Supports flowering, fruit set & fill
- Calcium helps prevent blossom-end rot
- Strengthens cell walls for cooler temps
- Improves nutrient uptake & root function
- Hold back on N during dormancy
- Low-dose trace support for houseplants
Our Growers & Partners
Simple, premium case studies. Images are centred and never cropped. Adjust only --img-w, --img-h, or --img-box-h to tune size.
Harbour Hydroponics
Strawberries & Herbs — Recirculating NFT
- Stable EC curves; fewer tip-burn events on heat runs.
- Balanced Ca:Mg for structure; prevents blossom-end rot.
- Injector-friendly concentrates; repeatable mix behaviour.
Sydney Flower Farm
Cut Flowers — Glasshouse & Field
- Stage feeding from bud-set → harvest for uniform heads.
- Clean mixes; no injector sediment or clogging.
Riverlands Produce Co.
Mixed Citrus & Stone Fruit
- P-led flowering; targeted K for fill & flavour.
- Clear fertigation; no flocculation with Ca additions.
Our Growers & Partners
See how Australian farmers, hydroponic growers, and flower producers use CompleteGrow fertilisers for consistent, professional results.
Harbour Hydroponics
Strawberries & Herbs — Recirculating NFT
“Stable EC curves all season, fewer tip-burn events on warm runs, and crystal-clear mixes in injectors.”
- Balanced Ca:Mg ratio prevents blossom-end rot.
- Predictable uptake for tighter harvest schedules.
- No injector clogging; repeatable mix behaviour.
Sydney Flower Farm
Cut Flowers — Glasshouse & Field
“Uniform colour and stem strength from bud-set to cut — no injector sediment, no losses.”
- Stage feeding ensures strong heads and colour uniformity.
- Light foliar top-ups for turgor maintenance before harvest.
Riverlands Produce Co.
Mixed Citrus & Stone Fruit
“Better pack-out consistency and fruit density across all varietals.”
- P-led flowering with targeted K for fruit fill and flavour.
- Clear fertigation; no flocculation with calcium additions.
Types of Fertilisers & When to Use Them
Liquid Fertilisers
Fast-acting and ideal for regular feeding. Perfect for indoor plants, leafy greens, and hydroponic systems.
🌟40% OFF🌟 All Purpose Plant Liquid Fertiliser NPK 20-20-20 & Micro Nutrients
Powdered Fertilisers
Highly concentrated, economical, and ideal for outdoor crops, hydroponics, and general plant feeding.
NPK 20-20-20 Powder Soluble Nutrient Plant Fertilizer & Micro Nutrients
Custom NPK Blends
Need specific ratios for your crop, soil, or setup? We offer made-to-order NPK mixes for commercial use.
Cal-Mag Hydroponic Nutrients Fertiliser
High-Performance Hydroponic Formulas
Specialised nutrients tailored for soilless setups — balanced for rapid growth and productivity.
Hydroponic Nutrients Fertilizer – Two-Part Formula (A & B)
LIQUID vs POWDER FERTILISER
When it comes to feeding your indoor plants, choosing between liquid and powder fertilisers can feel confusing.
Here’s a quick breakdown to help you decide based on your plant care style, budget, and experience level.
🌱 Powder fertilisers offer long-term savings—great for experienced growers who don’t mind mixing.
| Season | What to Use | Why It Works | |
| 🌱 Spring | High-N or Balanced (e.g. 20-20-20) | Kickstart leafy growth and early roots | |
| ☀️ Summer | Bloom/Fruit Boost (e.g. 4-18-38 + CalMag) | Supports flowering, fruiting, and resilience | |
| 🍂 Autumn | Root Boost / Low-N (e.g. 3-12-12) | Prepares for dormancy, strengthens roots | |
| ❄️ Winter | Minimal feeding | Avoid overfeeding during dormancy | |
Harbour Hydroponics
Strawberries & Herbs — Recirculating NFT
“Stable EC on warm runs; injectors stay crystal-clear across cycles.”
- Balanced Ca:Mg supports structure; prevents blossom-end rot.
- Predictable uptake windows → tighter harvest scheduling.
- Injector-friendly concentrates; repeatable mix behaviour.
Sydney Flower Farm
Cut Flowers — Glasshouse & Field
“Uniform colour & stem strength from bud-set to cut; zero injector sediment.”
- Stage feeding → consistent heads & colour across varieties.
- Light foliar top-ups maintain pre-cut turgor.
Riverlands Produce Co.
Mixed Citrus & Stone Fruit
“Higher pack-out consistency and fruit density across varietals.”
- P-led flowering; targeted K for fruit fill & flavour.
- Clear fertigation; no flocculation with Ca additions.
Harbour Hydroponics
Strawberries & Herbs — Recirculating NFT
“Stable EC on warm runs; injectors stay crystal-clear across cycles.”
- Balanced Ca:Mg supports structure; prevents blossom-end rot.
- Predictable uptake windows → tighter harvest scheduling.
- Injector-friendly concentrates; repeatable mix behaviour.
Sydney Flower Farm
Cut Flowers — Glasshouse & Field
“Uniform colour & stem strength from bud-set to cut; zero injector sediment.”
- Stage feeding → consistent heads & colour across varieties.
- Light foliar top-ups maintain pre-cut turgor.
Riverlands Produce Co.
Mixed Citrus & Stone Fruit
“Higher pack-out consistency and fruit density across varietals.”
- P-led flowering; targeted K for fruit fill & flavour.
- Clear fertigation; no flocculation with Ca additions.
Sydney Flower Farm
Cut Flowers
“Uniform colour & stem strength from bud-set to cut; zero injector sediment.”
Stage feeding → consistent heads & colour across varieties.
Light foliar top-ups maintain pre-cut turgor.
Sydney Flower Farm
Cut Flowers
“Uniform colour & stem strength from bud-set to cut; zero injector sediment.”
Stage feeding → consistent heads & colour across varieties.
Light foliar top-ups maintain pre-cut turgor.
Dural Flower Farm
Cut Flowers
“Uniform colour & stem strength from bud-set to cut; zero injector sediment.”
Stage feeding → consistent heads & colour across varieties.
Light foliar top-ups maintain pre-cut turgor.
Dural Rose Farm - MG Flowers
Cut Flowers
“CompleteGrow improved our yield and kept production consistent all season.”
Stage-Optimised Feeding: CompleteGrow trials began here in Sydney, refining how NPK ratios shift through each growth phase — from early shoot development to post-cut recovery.
Tailored Blends per Phase: Every formula was rebalanced for its specific task — driving early stem strength, colour formation, and bloom expansion without oversalting injectors.
Measured Results: Smoother fertigation, uniform bud size, and cleaner injector performance across multiple flower types under Sydney’s warm-season glasshouse conditions.
Mixed Hydroponic — Cucumbers & Eggplants
Hydroponic Vegetables
“Cucumbers kept weight through winter, and eggplants developed deeper colour and a better gloss.”
Custom Feeding Program: CompleteGrow developed crop-specific, phase-targeted blends for cucumbers and eggplants — aligning vegetative, flowering, and fruiting phases with precision-based nutrition.
Improved Crop Quality: Tailored nutrition improved fruit density and appearance, producing glossier eggplants with stronger colour and cucumbers that maintained firmness and uniformity.
Measured Results: More consistent yields, smoother fertigation, and improved grading through variable seasonal conditions.
| Season | What to Use | Why It Works | |
| 🌱 Spring | High-N or Balanced (e.g. 20-20-20) | Kickstart leafy growth and early roots | |
| ☀️ Summer | Bloom/Fruit Boost (e.g. 4-18-38 + CalMag) | Supports flowering, fruiting, and resilience | |
| 🍂 Autumn | Root Boost / Low-N (e.g. 3-12-12) | Prepares for dormancy, strengthens roots | |
| ❄️ Winter | Minimal feeding | Avoid overfeeding during dormancy | |
What Our Customers Grow with CompleteGrow
Swipe through real posts and quick wins — from indoor foliage to juicy fruit and hydro crispness.
@greenflatshare ★★★★★🪴 “No burn — just deep green growth. 16-4-14 is perfect indoors.”
@patch_to_plate ★★★★★🍓 “Finally getting sweet, full strawberries — 4-18-38 for the win!”
@freshraft_hydro ★★★★★🥬 “Hydro lettuce never looked this crisp — the A & B nutrients are unbeatable.”
@eastside_turf ★★★★★🌾 “Lawn looks like a golf course — 20-20-20 keeps it lush and even!”
Advanced Nutrient Program Map
phase-linked feeding • rosesDrive early stems and foliage; prepare internodes without salting injectors.
Phase guidance
Set heads and structure; reinforce cell walls with Ca/Mg for carry strength.
Phase guidance
Deepen colour, fill petals, and maintain pre-cut turgor with light foliar feeding.
Phase guidance
Reset plant quickly for the next flush; restore leaf area and carbohydrate reserves.
Phase guidance
CompleteGrow Custom Fertiliser
We develop precision NPK fertiliser blends tailored to your crop, irrigation system, and seasonal requirements — formulated and manufactured in Australia for consistency, quality, and long-term supply.
- Precision NPK + trace elements — balanced with Ca, Mg, S, Fe, Zn, Mn, Cu, B, Mo as required.
- Delivery formats — liquid concentrates, soluble powders, slow-release granules, and A&B hydroponic formulations.
- Application methods — soil incorporation, foliar spray, fertigation systems, hydroponic circulation.
- Customisation factors — soil & water tests, crop stage, EC/pH management, regional climate and yield targets.
- Support — product design, compatibility checks, trial batches, QA verification, palletised delivery, batch docs.
CompleteGrow Custom Fertiliser
At CompleteGrow, we develop custom fertiliser solutions built around the exact needs of your crop, soil, and growing environment. Every blend is tailored to match nutrient demand, irrigation setup, water quality, and seasonal climate—ensuring that plants receive the right nutrition, in the right balance, at the right stage of growth.
- Precision NPK + trace elements – balanced with Calcium, Magnesium, Sulphur, Iron, Zinc, Manganese, Copper, Boron, and Molybdenum as required
- Delivery formats: liquid concentrates, soluble powders, slow-release granules, and A&B hydroponic formulations
- Application methods: soil incorporation, foliar spray, fertigation systems, hydroponic circulation
- Customisation based on: soil and water testing, crop type, stage of growth, EC/pH management, irrigation infrastructure, and yield targets
- Support services: product design, compatibility checks, trial batches, independent QA testing, palletised delivery, and detailed batch documentation
By sharing your crop details, test results, and production goals, our agronomy team can design a fit-for-purpose blend using high-quality raw inputs. Each formula is manufactured with strict quality assurance, ensuring reliability, consistency, and measurable results season after season.
Trusted Australian Manufacturer for Bulk & Stockist Supply
We supply high-quality liquid and powdered NPK fertilisers at scale, backed by robust quality systems, batch traceability, and reliable logistics. Our partners include agricultural distributors, garden centres, and commercial growers nationwide.
Quality Assurance & Traceability
Documented batch control, retained samples, and spec sheets supplied on request.
Custom NPK Blends
Tailored ratios for crop, irrigation, EC/pH targets, and regional climate.
Australian Manufacturing
Consistent inputs, compliant processes, and technical documentation.
Reliable Logistics
NSW dispatch, palletised delivery, and scheduled supply to meet demand.
Lab-Backed Formulations
Solubility, compatibility checks, and optional third-party verification.
Agronomy Support
Program design across soil, foliar, fertigation, and hydroponic systems.
“Batch consistency and fast dispatch are the reason we standardised on Complete Grow — the custom NPK work has been excellent for our climate.”
Built for the gardener — from backyard beds to glasshouse rows
CompleteGrow started with a simple idea: good plants come from good habits. We work beside growers — reading water, feeling media, watching leaves — and we build nutrition programs that match real seasons, not just labels.
Our promise: practical advice, clean mixes, and repeatable results — whether you’re growing ten pots or ten thousand plants.
People before products
We start at your bench or bed — tools you have, time you’ve got, and goals that matter.
Clean, compatible mixes
Injector-friendly solutions with clear tank mixes and stable EC/pH across seasons.
Progress you can see
From straighter cucumbers to stronger stems — we focus on visible outcomes.
“They didn’t sell us a catalogue — they walked the rows, changed the feed by stage, and our winter runs finally held steady.”
Started on-site
Helping local growers dial in irrigation and nutrition — one bench at a time.
Blends by season
Shifted away from one-size-fits-all to stage-based programs growers could keep.
Cleaner fertigation
Focused on clarity and compatibility — fewer blockages, more consistency.
From beds to glasshouse
Scaled what works: simple instructions, predictable supply, and real support.
Built for the gardener — from backyard beds to glasshouse rows
CompleteGrow started with a simple idea: good plants come from good habits. We work beside growers — reading water, feeling media, watching leaves — and we build nutrition programs that match real seasons, not just labels.
Our promise: practical advice, clean mixes, and repeatable results — whether you’re growing ten pots or ten thousand plants.
People before products
We start at your bench or bed — tools you have, time you’ve got, and goals that matter.
Clean, compatible mixes
Injector-friendly solutions with clear tank mixes and stable EC/pH across seasons.
Progress you can see
From straighter cucumbers to stronger stems — we focus on visible outcomes.
“They didn’t sell us a catalogue — they walked the rows, changed the feed by stage, and our winter runs finally held steady.”
Built around the gardener — hands, habit, and honest results
We start beside growers — reading water, feeling media, watching leaves — then design nutrition you can actually keep. Clean, repeatable, and season-aware for beds, benches, and glasshouse rows.
Our promise: practical programs, clear mixes, and predictable harvests — from ten pots to ten thousand plants.
People before products
We shape programs to your tools, time, and targets — not the other way around.
Clean & compatible
Injector-friendly solutions with clear tank mixes and stable EC/pH through seasons.
Stage-based feeding
Vegetative push, colour set, fruit fill — tuned per phase for visible results.
Supply you can plan
NSW dispatch, pallet freight, and proactive ETAs to keep you on schedule.
“They didn’t sell us a catalogue — they walked the rows, tuned the feed by stage, and our winter runs finally held steady.”
Good for Your Plants — And the Planet
At Complete Grow, healthy plants start with a healthy planet. We formulate clean, effective fertilisers and focus on responsible sourcing, manufacturing and delivery.
We’re plant nerds with big smiles 🌿😄
Complete Grow is a small Aussie team mixing clean inputs with practical science. We keep feeding simple, results clear, and vibes friendly.
“Every formula is balanced for uptake first — so you can feed less and grow more.”
🌱 Grow“We’re here with plain-English guidance — no jargon, just results.”
😊 Hello“High-purity minerals, locally sourced where possible, and a lighter footprint.”
♻️ Care“Stage-based feeding means confident results — seedlings to bloom.”
🎯 GuideYour Garden Passport 🌿
We’re a friendly Aussie crew turning clean inputs into joyful, visible results. Think fewer guesses, happier plants, and a lighter footprint.
Our Mission: Small Dose, Big Smiles 🌿
We help everyday growers get visible results with cleaner inputs, simpler steps, and friendly, real support.
Balanced formulas that work at smaller doses — efficient, effective, and kind to your plants.
Locally sourced minerals where possible, formulated for reliable uptake.
Seedling → Veg → Bloom → Recovery. Clear steps, predictable results.
Plain-English tips from growers who actually answer your questions.
Right dose, right time. Better results, fewer leftovers, happier planet.
What We Do — Friendly, Clever Plant Care 🌿
From clean formulas to plain-English guides and real human help, here’s how we turn confused feeds into confident results.
High-purity minerals tuned for uptake. Small dose, big impact — across seedlings, veg and bloom.
- Locally sourced where possible
- Batch-tested for consistency
Seedling → Veg → Bloom → Recovery. Clear timing, predictable results — no jargon.
- Simple dose tables
- Print-friendly quick cards
Send a pic, get a plan. We reply with steps you can do today — easy wins, fast.
- Photo diagnostics
- One-page fix plans
We test in real Aussie conditions. Feedback shapes our formulas and guides.
- Before/after tracking
- Seasonal tweaks
Right dose, right time → less runoff and leftovers. Packaging kept minimal and recyclable.
- Smaller-dose schedules
- Recyclable materials
Locally made, packed with care, and delivered fast — so you can get growing.
- Fresh small batches
- Fast, trackable shipping
Our Pop-Up Storybook 📖🌿
A friendly peek at what CompleteGrow does — from clean formulas to plain-English guidance and real human help — told like a joyful little book.
What We Do (at a glance)
We help everyday growers get visible results with smaller doses and clearer steps. Here are our “pop-ups.”
High-purity minerals tuned for uptake — efficient feeds for seedling, veg, and bloom.
Seedling → Veg → Bloom → Recovery. Clear timing, zero jargon, confident results.
Send a pic, get a plan. Simple steps you can do today — we actually answer.
Real-world tests shape formulas and guides. Before/after tracking and seasonal tweaks.
Right dose, right stage → fewer leftovers and runoff. Packaging kept minimal & recyclable.
We mix fresh small batches locally so bottles don’t sit around. You get consistent, reliable feeds.
Ask anything — we’ll reply with steps you can do today. No gatekeeping, no jargon walls.
Steady veg, richer colour, reliable blooms — the fun stuff you can actually see.
We’re Plant People, Not Just Fertiliser Folks 🌿
At CompleteGrow, we don’t just make plant food — we make plant friends. We believe every leaf deserves a little love, every root deserves a boost, and every gardener deserves to feel like a wizard watching magic happen in their pots.
What started as a couple of curious growers mixing formulas in a backyard shed turned into a full-blown obsession with healthy, happy plants. Now, our fertilisers power gardens all across Australia — from balcony herbs to backyard jungles.
We keep things simple: feed well, grow strong, and have fun doing it. Because when your plants are thriving, so are you.
Let’s Grow Something Amazing Together 🌻
Wholesale Fertiliser, Made Simple
Join Australian distributors who choose CompleteGrow for clean, high-yield nutrition and reliable supply.
- Consistent stock & competitive pricing
- Easy-to-sell formulas growers trust
- Fast support from real growers (that’s us!)
🌏 Good for Your Plants — And the Planet
At Complete Grow, we believe healthy plants start with a healthy planet.
We’re committed to sustainability at every step — from the nutrients inside each bottle to the way it’s delivered to your door. Our fertilisers are proudly made in Australia using high-purity, locally sourced minerals. No harsh fillers. No shortcuts. Just results your plants (and the Earth) will thank you for.
- 🇦🇺 Locally made using premium Australian minerals
- 🔬 Scientifically balanced formulas for strong growth
- 🪴 Trusted by Aussie growers and plant lovers alike
- ♻️ Supporting responsible farming and soil health practices
CompleteGrow Mixing Calculator
Pick your product and guide, enter the litres you want to make, and we’ll calculate the amount to add.
Always check your product label. Powder tsp = 5 g, liquid tsp = 5 ml, scoop = 6 g.