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
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💚BULK SALE💚 20L All Purpose NPK Liquid Plant Food – Bulk Fertiliser for Home & Commercial Use
Original price was: $291.98.$258.80Current price is: $258.80.
🚚 Free Bulk Shipping Australia-Wide!
Balanced 20-20-20 liquid fertiliser with essential trace elements – now in 20L bulk size.
$0.06/L $0.05/L Ready-to-Use
✅ Makes 5,000L of ready-to-use feed
✅ Ideal for veggies, herbs, flowers, orchids & indoor plants
✅ Great for hydroponics, foliar feeding & commercial gardens
✅ Use weekly in growing season, fortnightly in winter
✅ Includes Boron, Iron, Zinc, Manganese & more
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Boost Plant Growth
20L All Purpose Liquid Fertiliser – NPK 20-20-20 with Micronutrients
A commercial-size, balanced liquid fertiliser made from premium-grade raw materials, designed for fast, healthy plant growth at scale.
This bulk 20L drum is trusted by gardeners, nurseries, and growers for its versatility and performance. Suitable for:
- Orchids, roses, and flowering plants
- Fruit trees, vegetables, and edible herbs
- Indoor houseplants, hydroponic systems & commercial gardens
Apply directly to soil or as a foliar spray during the cooler parts of the day.
Ideal for large-scale gardening, hydroponics and commercial use — delivering 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:
Formulated from premium NPK 20-20-20 source materials.
- Total Nitrogen: 10%
- Phosphate: 10%
- Potash: 10%
Trace Elements:
- Boron: 0.02%
- Copper: 0.05%
- Iron: 0.10%
- Manganese: 0.05%
- Chelated Manganese: 0.05%
- Molybdenum: 0.0005%
- Zinc: 0.05%
- Chlorine as (Cl): Maximum 0.025%
Please Note:
Use half strength for orchids, bonsai, succulents, hoya, indoor plants and other plants that don’t require high strength fertiliser.
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Best For These Plants
Boost Growth for Veggies, Herbs & Indoor Plants
Perfect for Orchids, Flowers & Fruit Trees
How it Works
Mix 4ml per 1L of water
Feed Your Plants
Watch Them Thrive
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.
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
Standard: 4ml per litre
Sensitive plants: 2ml per litre
Apply
Water In • 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 | 300ml fertiliser + 700ml water |
| Medium | 250ml fertiliser + 750ml water |
| Light | 150ml fertiliser + 850ml water |
Want faster, simpler feeding?
Thrive
COMPLETE NUTRITION • VISIBLE RESULTS
Visible results within 7 days
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
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I’ve used a lot of fertilisers over the years, but this NPK 20-20-20 is hands-down the best value I’ve found. It’s properly balanced — unlike turf blends that are missing phosphorus — and works across my entire garden.
John P
Verified Buyer
The results are amazing shinier leaves, more growth, and even new flower buds. The 20L size lasts forever and is way more affordable than buying small bottles
Robert S
Verified Buyer
Why Choose Our 20L Bulk NPK Fertiliser
20L All Purpose Liquid Fertiliser (NPK 20-20-20 + trace elements) for rapid, healthy plant growth across veggies, herbs, flowers, fruit trees, and hydroponics. Trusted by nurseries & growers. Fully water-soluble. Apply weekly or fortnightly. Free shipping Australia-wide.
Balanced 20-20-20 formula with essential micronutrients
✅ Great for all plants: veggies, herbs, flowers, orchids & more
✅ Ideal for hydroponics, foliar spray & soil use
✅ Weekly feeding = faster, healthier growth
✅ Trusted by nurseries, growers & commercial farms
✅ Includes Iron, Boron, Zinc, Manganese & more
✅ Great for all plants: veggies, herbs, flowers, orchids & more
✅ Ideal for hydroponics, foliar spray & soil use
✅ Weekly feeding = faster, healthier growth
✅ Trusted by nurseries, growers & commercial farms
✅ Includes Iron, Boron, Zinc, Manganese & more
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.
FAQ
It’s designed for all plant types — from fruit trees, veggies & flowers to orchids, indoor plants & hydroponics. Whether you’re a home gardener or running a nursery, this is your go-to liquid feed.
Yes! It’s fully water-soluble and ideal for hydroponic systems. Provides balanced nutrition with zero clogging or residue.
Use once a week in the growing season and once every two weeks in winter. For sensitive plants like succulents, orchids or bonsai — use at half-strength.
Unlike turf fertilisers that often lack Phosphorus, ours is balanced (20-20-20) with full macro & micro nutrients — supporting roots, flowers, and fruiting, not just greening. It’s truly all-purpose.
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