★★★★★
Big improvement
The plants are responding really well.
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Reviews
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★★★★★
Based on 11 reviews
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🌟40% OFF🌟 All Purpose Plant Liquid Fertiliser – Formulated from NPK 20-20-20 & Micro Nutrients
Price range: $34.00 through $258.80
Low in stock
High-strength 20-20-20 liquid fertiliser with essential trace elements.
Balanced NPK nutrition for stronger roots, healthier foliage and sustained growth
High-concentration liquid formula for powerful feeding in every application
Enriched with iron, zinc, manganese and boron to support stronger plant performance
Fast-absorbing and easy to use for consistent, visible results
Versatile formula suitable for a wide range of plants
Australian Owned & Manufactured
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Boost Plant Growth
All Purpose Liquid Fertiliser – NPK 20-20-20 with Micronutrients
A premium-quality, balanced liquid fertiliser made from high-grade raw materials, designed for fast, healthy plant growth.
This complete fertiliser is trusted by gardeners and growers for its versatility and performance. Suitable for:
- Orchids, roses, and flowering plants
- Fruit trees, vegetables, and edible herbs
- Indoor houseplants and hydroponic systems
Apply directly to soil or as a foliar spray during the cooler parts of the day.
Ideal for both traditional gardening and hydroponic setups, providing essential nutrients for vibrant growth and strong yields.
Directions for Use:
- Mix 4ml per litre of water
- Apply once a week during the growing season
- Apply once every two weeks during winter
Guaranteed Analysis:
Professional Concentrate: Formulated from premium NPK 20-20-20 source materials for a highly potent, balanced 1:1:1 feed.
| Nutrient | Percentage (%) |
|---|---|
| Total Nitrogen (N) | 10% |
| Phosphate (P₂O₅) | 10% |
| Potash (K₂O) | 10% |
Trace Elements:
| Element | Percentage (%) |
|---|---|
| Boron (B) | 0.02% |
| Copper (Cu) | 0.05% |
| Iron (Fe) | 0.10% |
| Manganese (Mn) | 0.05% |
| Chelated Manganese | 0.05% |
| Molybdenum (Mo) | 0.0005% |
| Zinc (Zn) | 0.05% |
| Chlorine (Cl) | Max 0.025% |
Please Note:
Use half strength for orchids, bonsai, succulents, hoya, indoor plants and other plants that don’t require high strength fertiliser.
Reviews
5.0
★★★★★
Based on 11 reviews
★★★★★
Big improvement
The plants are responding really well.
★★★★★
Good performance and easy to use
i have been consistent with it and the plants are responding well with steady growth.
★★★★★
Really consistent results
Been using this across a few different plants and everything looks healthier. Leaves are greener and growth is steady without needing to overthink it.
Page 1 of 4
Why Choose Our All Purpose Liquid Fertilizer
Premium All Purpose Liquid Fertilizer – Balanced NPK 20-20-20 with essential trace elements. Ideal for vegetables, herbs, flowering plants, hydroponics, and indoor pots. Fast absorption, weekly feeding. 100% Australian-made with free shipping.
Balanced 20-20-20 formula with essential micronutrients
✅ Ideal for veggies, herbs, flowers, orchids & indoor plants
✅ Suitable for hydroponics, foliar feeding & soil application
✅ Weekly feeding = faster, healthier plant growth
✅ Includes Iron, Boron, Zinc, Manganese & more
✅ Made in Australia – high-grade materials & free shipping
✅ Ideal for veggies, herbs, flowers, orchids & indoor plants
✅ Suitable for hydroponics, foliar feeding & soil application
✅ Weekly feeding = faster, healthier plant growth
✅ Includes Iron, Boron, Zinc, Manganese & more
✅ Made in Australia – high-grade materials & free shipping
NPK Ratio
-
N
20
-
P
20
-
K
20
What NPK 20-20-20 Means
A balanced, all-purpose fertilizer—also called 20-20-20 fertilizer or 20 20 20 fertilizer—supplying equal parts nitrogen (N), phosphorus (P) and potassium (K) for even vegetative growth, strong roots and steady 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: Great “all purpose fertilizer” for seedlings, transplants, herbs, greens, houseplants and ornamentals—ideal between bloom-booster cycles.
- Flexible formats: Works as a water-soluble powder or a ready-to-mix 20 20 20 fertilizer liquid for soil, coco or hydroponics.
Read More
What is NPK 20 20 20? It’s a complete, balanced plant food delivering 20% nitrogen (for chlorophyll and foliage), 20% available phosphate (P2O5 for roots and blooms) and 20% soluble potash (K2O for quality, color and resilience). Because the ratio is even, this 20-20-20 fertilizer is a reliable “do-most-things” feed that keeps growth steady without pushing plants too hard in any single direction.
- Use for vegetables, flowers, shrubs, lawns and indoor plants when a general, balanced feed is desired.
- Mix as directed by your product label; apply to moist media for consistent uptake. Can be used as a foliar spray where appropriate.
- If your water is very soft or plants are heavy feeders, pair with a calcium-magnesium supplement for complete nutrition.
Best For These Plants
Ideal for Herbs, Veggies & Indoor & Outdoor Plants
Supports Flowering & Fruiting Plants
How it Works
Mix 4ml per litre of water
Feed Your Plants
Watch Them Thrive
How Much to Mix
CompleteGrow Mixing Calculator
Enter your total litres — we’ll calculate how much All Purpose to add.
Rate: 4 ml/L
Calculated at 4 ml/L.
Reviews From Our Gardener's
Reviews
5.0
★★★★★
Based on 11 reviews
★★★★★
Big improvement
The plants are responding really well.
★★★★★
Good performance and easy to use
i have been consistent with it and the plants are responding well with steady growth.
★★★★★
Really consistent results
Been using this across a few different plants and everything looks healthier. Leaves are greener and growth is steady without needing to overthink it.
Page 1 of 4
My chain of hearts have been giving me plenty of seeds lately so I thought I would have a go at growing some in Sphagnum Moss under grow lights and feeding them with @completegrow…. 9 weeks later I have healthy little babies 😍 @time__and__place.
This fertiliser has made a big difference to my hydrangeas. The plants look stronger, the leaves are a healthy deep green, and the blooms are bigger, fuller, and more vibrant. It mixes well and has been really easy to use. Especially with the sprayer, i no longer need to use a watering can.
Amy J
Verified Buyer
FAQ
To fertilise plants effectively, mix 4ml of our NPK 20-20-20 liquid fertiliser per litre of water. Apply directly to soil at the base or use as a foliar spray. This balanced formula delivers essential nutrients quickly and safely—perfect for vegetables, flowers, herbs, and indoor plants.
Yes — it’s fully water-soluble, making it perfect for foliar application and hydroponic systems. No clogging, no residue.
Liquid fertiliser is a water-soluble nutrient solution that delivers fast-acting plant nutrition through both soil and foliage. Our NPK 20-20-20 liquid fertiliser is ideal for quick absorption, helping boost plant growth, leaf colour, and overall health. It’s perfect for home gardeners, hydroponics, and commercial growers seeking immediate results.
The best time to fertilise is in the early morning or late afternoon to avoid leaf burn. Fertilise weekly in spring and summer for maximum growth. Avoid feeding during heatwaves or waterlogged conditions. Always water after applying fertiliser if the soil is dry.
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All Purpose Formula
One Fertiliser. Many Plant Types.
Our All Purpose Plant Liquid Fertiliser is designed for growers who want one easy feed for a wide range of plants, from indoor foliage and herbs to veggies, flowers and fruiting plants.
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