Excellent for making larger batches
"I normally mix up a big watering container at once and this powder is perfect for that. It dissolves well and is very easy to measure consistently."
Free Shipping
Limited Time
NPK 20-20-20 + trace elements
Hydro & soil
NPK 20-20-20 PowderSoluble Nutrient Plant FertiliserWith Micro Nutrients
Balanced 20-20-20 fertiliser with essential micro nutrients.
- Balanced NPK 20-20-20 nutrition for strong roots, healthy foliage, flowering and fruiting
- One feed for almost every plant ideal for vegetables, flowers, fruit trees, herbs, orchids and indoor plants
- Soil, hydroponic and foliar use a versatile water-soluble formula for every way you grow
- Fast-dissolving and easy to apply includes essential micronutrients and feeds every 7ā14 days
- Australian made with high-purity mineral ingredients trusted by Aussie growers for consistent feeding
$34.90
$69.80/kg
Choose select amount
“"I normally mix up a big watering container at once and this powder is perfect for that. It dissolves well and is very easy to measure consistently."”
Australian owned
& manufactured
Free shipping
Limited time
Secure checkout
PayPal, card, wallets
From our growers
See all 6
Description
One of the most popular and strongest complete fertilisers on the market, made from high-purity natural mineral raw materials. A balanced, water-soluble feed that dissolves easily and gives your plants the nitrogen, phosphate, potash and trace elements they need for strong, healthy growth.
Soil
Potted plants
Foliar spray
HydroponicsGreat for
Vegetables & herbs
Tomatoes & chillies
Flowers & roses
Fruit trees
Indoor & potted plants
Orchids
Hedges & shrubs
Climbers & ground covers
General garden plants
Why growers choose it
Full-strength 20-20-20: our most powerful all-round feed.
Strong, healthy growth: greener leaves and vigorous growth all season.
Stronger roots & better flowering: plenty of phosphate and potash.
Micronutrients included: boron, copper, iron, manganese, molybdenum & zinc.
High-purity & water-soluble: dissolves fully for easy mixing.
Soil, foliar or hydro: one feed for every way you grow.
A little goes a long way: a few teaspoons makes litres of feed.
i
Best for everyday growth. Use 20-20-20 for healthy leaves and roots, then switch to Advanced Formula 4-18-38 once plants start budding and flowering.
Best for everyday growth. Use 20-20-20 for healthy leaves and roots, then switch to Advanced Formula 4-18-38 once plants start budding and flowering.
Australian MadeNeed a larger quantity or a custom NPK ratio? We can help.
Guaranteed Analysis
A balanced, high-strength formula supplying equal levels of nitrogen, phosphate and potash. Made from natural mineral raw materials.
Balanced NPK 20-20-20
Essential trace elements
Added micronutrients support healthy growth and efficient nutrient uptake.
Australian MadeLarger quantities and custom NPK ratios are available.
⚠️
Check the Guaranteed AnalysisDon’t be misled by other listings claiming NPK 20-20-20. Always read the analysis of the total NPK levels.
Check the Guaranteed AnalysisDon’t be misled by other listings claiming NPK 20-20-20. Always read the analysis of the total NPK levels.
How to mix & feed
Watering can
Apply every 7–14 days
Add the amount for your plant to 5 litres of water and stir until completely dissolved.
Outdoor PlantsGardens, veggies & fruit trees
3 tsp / 5Lapprox. 15g
Indoor PlantsIndoor & potted plants
1 tsp / 5Lapprox. 5g
Sensitive PlantsOrchids, bonsai, succulents & hoya
½ tsp / 5Lapprox. 2.5g
Mix thoroughly until fully dissolved, then apply evenly around the root zone.
i
How often should I feed?Every 7–14 days is a good guide, but it depends on the plant, the season and how fast it’s growing. Feed more often in spring and summer, less in the cooler months, and ease off when plants aren’t actively growing.
How often should I feed?Every 7–14 days is a good guide, but it depends on the plant, the season and how fast it’s growing. Feed more often in spring and summer, less in the cooler months, and ease off when plants aren’t actively growing.
Hose-end sprayer
Set the Dial to A
Pick a strength and mix it in the 1L sprayer bottle.
CompleteGrow fertiliser sprayer
Before you spray
1. Add the powder and water to the 1L bottle.
2. Mix until the powder has completely dissolved.
3. Attach to your hose, set the dial to A and spray evenly.
FAQ
How much do I mix?
- Outdoor Plants ā gardens, vegetables & fruit trees: 3 tsp (approx. 15g) per 5L of water.
- Indoor Plants ā indoor & potted plants: 1 tsp (approx. 5g) per 5L of water.
- Sensitive Plants ā orchids, bonsai, succulents & hoya: Ā½ tsp (approx. 2.5g) per 5L of water.
How often should I feed?
Apply every 7ā14 days while plants are actively growing. Reduce feeding when growth slows during cooler months.
Can I use it as a foliar spray?
Yes. Use approximately half the normal strength for your plant type and spray during the cooler part of the day, preferably early morning or late afternoon.
Can I use it on vegetables and fruit trees?
Yes. Use the outdoor rate:
- 3 tsp (approx. 15g) per 5L of water.
Can I use it on indoor plants?
Yes. Use the indoor rate:
- 1 tsp (approx. 5g) per 5L of water.
Can I use it on orchids, bonsai, succulents and hoya?
Yes. These are more sensitive plants, so use:
- Ā½ tsp (approx. 2.5g) per 5L of water.
How do I mix it?
Add the required amount of powder to water and stir thoroughly until completely dissolved before applying.
Can I use it in a hose-end sprayer?
Yes. Dissolve the powder completely before adding it to the sprayer. Make sure there are no undissolved particles that could block the sprayer.
What is the difference between the powder and the liquid?
Both provide a balanced NPK 20-20-20 nutrient profile.
- Powder: Highly concentrated dry fertiliser that is dissolved in water before use.
- Liquid: Liquid concentrate that can be measured directly into water.
How should I store it?
Keep the bag tightly sealed in a cool, dry place away from moisture, children and pets. Exposure to moisture can cause the powder to clump.
Reviews
5.0
Based on 14 reviews
Growing something great?
Share a quick review and a photo of your garden ā it really helps other gardeners.
100% rated it 4 stars or higher
Genuine reviews from CompleteGrow customers.
Customer photos
6
Very happy with the 20-20-20
"Dissolves really well and has been easy to use across the garden. I've noticed strong healthy growth and will definitely keep using it."
Good stuff
"Mixes easy and does the job. Been using it on the veggie patch and everything is growing really well."
Showing 3 of 14
Best For These Plantsā
Perfect for Vegetables, Flowers & Herbs
Great for Orchids, Indoor Plants & Hydroponics
How it Works
Outdoor: 3 tsp per 5L
Indoor: 1 tsp per 5L
Orchids & succulents: Ā½ tsp per 5L
Feed Your Plants
Watch Them Thrive
All Purpose Formula
One Fertiliser. Many Plant Types.
NPK 20-20-20 Powder is made for growers who want a high-strength, balanced all-purpose fertiliser for indoor plants, veggies, flowers, fruiting plants and general garden use.
Indoor favourite
Indoor Plants
No-smell formula for easy indoor feeding.
Great for foliage plants that need balanced weekly feeding without the routine feeling messy or complicated indoors.
- Monstera
- Pothos
- Philodendron
- Peace Lily
Faster growth
Veggies & Herbs
Higher yields and faster growth for edible gardens.
A strong all-round choice for edible gardens, raised beds and herb pots that need dependable routine feeding.
- Tomato
- Chilli
- Basil
- Parsley
Balanced support
Flowering Plants
Steady support for healthy colour and growth.
Ideal for ornamentals and flowering plants that benefit from a reliable all-round feeding routine.
- Petunias
- Geraniums
- Roses
- Begonias
Fruiting support
Fruit & Citrus
General support during active fruiting growth.
Useful when fruit trees need balanced feeding support for foliage, flowering and seasonal development.
- Lemon
- Lime
- Orange
- Mandarin
Easy routine use
Pots & Containers
One simple feed for mixed containers.
Perfect for growers feeding balcony pots, patio containers and mixed planters who want one simple liquid fertiliser.
- Patio pots
- Balcony gardens
- Mixed planters
All-round choice
General Garden Use
One versatile feed for mixed plant types.
Best for gardeners who want one reliable fertiliser across beds, borders and everyday garden plants.
- Garden beds
- Mixed borders
- Young plants
See More Plant Types
Indoor Plants
- Monstera
- Pothos
- Philodendron
- Peace Lily
- ZZ Plant
- Rubber Plant
- Syngonium
- Ferns
- Spider Plant
- Chinese Evergreen
Veggies & Herbs
- Tomatoes
- Chilli
- Capsicum
- Lettuce
- Basil
- Mint
- Parsley
- Coriander
- Spinach
- Cucumber
Flowering Plants
- Petunias
- Geraniums
- Roses
- Begonias
- Impatiens
- Hydrangeas
- Hibiscus
- Bougainvillea
- Marigolds
Fruit & Garden Use
- Lemon
- Lime
- Orange
- Mandarin
- Fig Trees
- Avocado
- Papaya
- Passionfruit
- Patio pots
- Mixed beds
Simple All-Purpose Feeding
Mix
Outdoor plants: 3 tsp per 5L
Indoor plants: 1 tsp per 5L
Orchids, bonsai & hoya: Ā½ tsp per 5L
Apply
Water In ā¢ Or Use Our Sprayer
Ditch the measuring cups. Our precision sprayer automatically mixes the perfect ratio for you. Just attach to your hose, dial in your feed, and cover your entire garden in minutes with zero guesswork.
| Feeding Level | Mix (1L Bottle) |
|---|---|
| Heavy | 200g fertiliser + 800ml water |
| Medium | 100g fertiliser + 900ml water |
| Light | 50g fertiliser + 950ml water |
Want faster, simpler feeding?
Thrive
COMPLETE NUTRITION ā¢ VISIBLE RESULTS
Visible results within 7 days
How Much to Mix
NPK 20-20-20 Powder ā Mixing Calculator
Choose a guide (per 5 L), enter litres ā weāll calculate grams and tsp automatically.
Dissolve powder fully. Assumes 1 tsp ā 5 g.
Reviews From Our Gardener's
5.0
Based on 14 reviews
Growing something great?
Share a quick review and a photo of your garden ā it really helps other gardeners.
100% rated it 4 stars or higher
Genuine reviews from CompleteGrow customers.
Customer photos
6
Excellent for making larger batches
"I normally mix up a big watering container at once and this powder is perfect for that. It dissolves well and is very easy to measure consistently."
Very happy with the 20-20-20
"Dissolves really well and has been easy to use across the garden. I've noticed strong healthy growth and will definitely keep using it."
Good stuff
"Mixes easy and does the job. Been using it on the veggie patch and everything is growing really well."
Showing 3 of 14
Iām so I love with the Anthurium Andraeanum ‘eternity-white! She has the most beautiful huge leaves with white flowers. Looking forwards to her berries to finish growing. Sheās been thriving with regular feeding and consistent care, easily one of my favourite plants right now.
Have used this fertiliser on all my indoor plants and the results have been great. Everythingās looking healthy, lush, and growing more consistently. Iāve got a mix of pothos, ferns and calatheas. Itās clean, easy to use, and hasnāt caused any buildup or leaf burn. Definitely noticed better colour and stronger growth since switching over along with having no fishy odour smell
Priya S
Verified Buyer
NPK 20-20-20 Powder Soluble Nutrient Plant Fertiliser & Micro Nutrients
Water-soluble powder fertiliser with balanced NPK 20-20-20 + essential trace elements. Suitable for soil, hydroponics & foliar feeding. Ideal for vegetables, herbs, orchids & flowering plants. Easy-to-use and fast-acting. Made in Australia. Trusted by home & pro growers.
Balanced 20-20-20 formula with essential micronutrients
ā Ideal for veggies, flowers, herbs, orchids & fruit trees
ā Suitable for soil, hydroponics & foliar feeding
ā Fast-acting, water-soluble ā apply every 7ā14 days
ā Made in Australia & trusted by home and commercial growers
ā Premium-quality ingredients for consistent results
ā Ideal for veggies, flowers, herbs, orchids & fruit trees
ā Suitable for soil, hydroponics & foliar feeding
ā Fast-acting, water-soluble ā apply every 7ā14 days
ā Made in Australia & trusted by home and commercial growers
ā Premium-quality ingredients for consistent results
NPK Ratio ā 20-20-20 Powder
-
N
20
-
P
20
-
K
20
What NPK 20-20-20 Means
A balanced, all-purpose fertilizer delivering equal parts N, P and K for steady foliage, roots and flowering across vegetables, houseplants, ornamentals and lawns.
- Balanced nutrition: Equal N-P-K (20-20-20) supports leafy growth (N), rooting & bud set (P) and vigor & stress tolerance (K).
- All-purpose use: Ideal between bloom-booster cycles and for general maintenance on seedlings, herbs, greens, indoor plants and ornamentals.
- Flexible formats: Works as water-soluble powder or liquid feed for soil, coco and hydroponics.
Read More
NPK 20-20-20 provides 20% nitrogen for chlorophyll and foliage, 20% available phosphate (PāOā ) for roots and early flower signals, and 20% soluble potash (KāO) for quality, colour and resilience. The even ratio makes this 20-20-20 fertilizer a reliable ādo-most-thingsā feed that maintains balanced growth without pushing plants too hard in one direction.
- Use: Vegetables, flowers, shrubs, lawns and indoor plants when a general, balanced feed is desired.
- Mixing: Dissolve in water per label directions; apply to moist media. Suitable for foliar where appropriate.
- Tip: In very soft water or with heavy feeders, pair with a Cal-Mag supplement.
- Good practice: Monitor EC/ppm and pH in hydro/coco. Flush occasionally to prevent salt build-up.
FAQ
Yes! Itās 100% water-soluble and great for hydro systems. Just mix as directed and apply via reservoir or manual feed.
Absolutely ā just apply at half strength during cooler parts of the day to avoid leaf burn and maximise uptake.
Some listings inflate numbers ā we show total nutrient analysis and use only high-quality, traceable ingredients. No fillers, no fluff.
Apply every 7 to 14 days. For sensitive plants like orchids, use a lower dose. Itās versatile and easy to adjust.
