★★★★★
Plants looking great again :)
After using this for a few weeks the new growth looks stronger and the colours are way brighter again.
Free Shipping
Limited Time
Reviews
5.0
★★★★★
Based on 2 reviews
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Indoor Plant Food Concentrate Fertiliser 100ml Makes 100 Litres
Price range: $24.60 through $36.50
Premium plant-food concentrate crafted for lush indoor growth.
✅ Fast-absorbing 16-4-14 NPK with essential trace elements
✅ Mix 1 mL per litre of water. Feed weekly in growth season, fortnightly in winter
✅ Promotes vibrant foliage, stronger roots, and year-round vitality
✅ Low phosphorus (4) suits sensitive indoor plants like aroids and ferns
Australian Owned & Manufactured
Free Shipping
Limited Time
Boost Plant Growth
Complete Grow Indoor Plant Food
Premium Plant Food Made by Farmers Who Live and Breathe Plants. This distinctive concentrated formula is specifically crafted for indoor plants. It provides all the necessary nutrients for plants to thrive and flourish. Our indoor plant food contains a special blend of Nitrogen, Phosphorus, and Potassium (NPK) that is readily absorbed by plants.NPK Composition:
| Nutrient | Symbol | Percentage (%) |
|---|---|---|
| Nitrogen | N | 16% |
| Phosphorus | P | 4% |
| Potassium | K | 14% |
Plus all essential trace elements
Ingredients:
- Monopotassium Phosphate
- Calcium
- Iron (as Iron EDTA)
- Manganese (as Manganese Chelate)
- Copper (as Copper Sulphate)
- Zinc (as Zinc Chelate)
Directions for Use:
Add 1ml per litre of water (¼ teaspoon).
For optimal results, apply once a week during the growing season and once fortnightly during winter.Reviews
5.0
★★★★★
Based on 2 reviews
★★★★★
Plants looking great again :)
After using this for a few weeks the new growth looks stronger and the colours are way brighter again.
★★★★★
Best indoor plant food!
My Stromanthe Tri Colour and Calathea Makoyana- Peacock strutting off their beauty in the afternoon Sunshine 💚🪴💚 Just look at those colours! I spoil all my babies every two weeks with @completegrow Indoor Plant food nothing but the best because their worth it !
Best For These Plants
Made for Aroids, Ferns & Indoor Plant Lovers
Monstera, Pothos & Leafy Plants Love It
How it Works
Mix 1ml per litre of water
Feed Your Plants
Watch Them Thrive
Made for real houseplants
One Formula. A Whole Indoor Jungle.
One indoor plant fertiliser for the whole collection — foliage, trailing vines, palms, ferns and flowering houseplants grown in pots, planters and indoor containers.
1 mL per litre Mix with water and feed as directed on the label.
01
Climbing & Trailing
Pothos & Trailing Vines
Feeds the fast, leggy growth trailing plants put on through the warmer months.
- Pothos
- Philodendron
- Syngonium
- Scindapsus
Long gaps between leaves means it's running hungry.
02
Large Foliage
Monstera & Large Foliage
Big leaves need steady nitrogen. Supports leaf size, colour and new growth.
- Monstera
- Rubber Plant
- Fiddle Leaf Fig
- Bird of Paradise
New leaves coming in smaller than the last is the signal.
03
Soft Foliage
Palms & Ferns
Sensitive feeders — steady, diluted feeding keeps fronds green without browning the tips.
- Boston Fern
- Maidenhair Fern
- Parlour Palm
- Areca Palm
Water in at the base rather than spraying the fronds.
04
Everyday Indoor
Low-Light Houseplants
Routine feeding keeps low-light plants from going pale and leggy between repots.
- ZZ Plant
- Dracaena
- Calathea
- Chinese Evergreen
Pale, stretched growth shows up here first.
05
Compact & Structured
Bonsai & Mini Trees
Small pots hold very little root volume, so little and often beats a heavy feed.
- Ficus Bonsai
- Jade Bonsai
- Chinese Elm
- Serissa
Feed after watering, never onto dry roots.
06
Indoor Blooms
Flowering Indoor Plants
Balanced phosphorus and potassium support bud set and repeat flowering indoors.
- Anthurium
- Peace Lily
- Indoor Orchids
- African Violet
Keep feeding right through budding, not just before.
Foliage Plants
Leafy Favourites
- Monstera
- Pothos
- Philodendron
- Rubber Plant
- ZZ Plant
- Chinese Evergreen
- Dieffenbachia
- Syngonium
- Dracaena
- Fiddle Leaf Fig
Compact & Colourful
Small Pot Plants
- Fittonia
- Peperomia
- Pilea
- Calathea
- Prayer Plant
- Begonia
- Polka Dot Plant
- Tradescantia
- Aluminium Plant
- Nerve Plant
Trailing & Hanging
Cascading Plants
- Golden Pothos
- Marble Queen Pothos
- String of Hearts
- String of Turtles
- Spider Plant
- Scindapsus
- Heartleaf Philodendron
- Philodendron Brasil
- Hoya
- English Ivy
Palms & Ferns
Softer Foliage
- Boston Fern
- Maidenhair Fern
- Bird's Nest Fern
- Button Fern
- Kimberley Queen Fern
- Parlour Palm
- Areca Palm
- Lady Palm
- Kentia Palm
- Majesty Palm
Flowering Indoor
Indoor Blooms
- Anthurium
- Peace Lily
- Indoor Orchids
- Phalaenopsis
- African Violet
- Bromeliads
- Kalanchoe
- Cyclamen
- Begonia
- Indoor Jasmine
Bonsai & Miniature
Compact Trees
- Ficus Bonsai
- Jade Bonsai
- Chinese Elm
- Serissa
- Fukien Tea
- Money Tree
- Dwarf Umbrella Tree
- Portulacaria Afra
- Juniper Bonsai
- Carmona
Better Feeding. Better Plants.
A concentrated indoor plant food designed to make routine feeding simple. Measure a small amount, mix with water and feed your houseplants as part of their normal watering routine.
CONCENTRATED FORMULA
Just 1 mL per litre of water.
THREE SIMPLE STEPS
Measure. Mix. Feed.
1 mL/L
Add to your watering can and mix thoroughly with water.
Water the potting mix evenly as part of your normal routine.
Feeding Guide
Adjust feeding with the season.
ACTIVE GROWTH
Feed weekly
WINTER
Every 2 weeks
INDOOR NUTRITION
For thriving potted plants.
QUICK MIXING CALCULATOR
How Much to Mix
Enter how much water you are preparing and we'll calculate the Indoor Plant Food amount.
Litres
Add this much
Enter an amount
Your Indoor Plant Food amount will appear here.
Indoor rate · 1 mL per litreHow Much to Mix
Reviews From Our Gardener's
Reviews
5.0
★★★★★
Based on 2 reviews
★★★★★
Plants looking great again :)
After using this for a few weeks the new growth looks stronger and the colours are way brighter again.
★★★★★
Best indoor plant food!
My Stromanthe Tri Colour and Calathea Makoyana- Peacock strutting off their beauty in the afternoon Sunshine 💚🪴💚 Just look at those colours! I spoil all my babies every two weeks with @completegrow Indoor Plant food nothing but the best because their worth it !
Verified Buyer
Verified Buyer
“
My Stromanthe Tri Colour and Calathea Makoyana- Peacock strutting off their beauty in the afternoon Sunshine 💚🪴💚 Just look at those colours! I spoil all my babies every two weeks with @completegrow Indoor Plant food nothing but the best because their worth it ! 🙌🏻 @time__and__place
@time__and__place
★★★★★
Verified Buyer
“
Had to give my big girl a drink of water today so I placed her in the shower and now she’s too heavy for me to get out 🥴Thanks again to @completegrow for the wonderful Indoor liquid food my babies are so happy! 🌱@gdaygardeners
@gdaygardeners
★★★★★
Verified Buyer
WHY INDOOR FEEDING MATTERS
Nutrition made for life in a pot.
Indoor plants rely on the limited soil inside their pot. CompleteGrow combines primary NPK nutrients with micronutrients to support healthy foliage, roots and steady plant growth.
Healthy foliage
Strong roots
Balanced growth
INSIDE COMPLETEGROW
Four parts. One balanced feed.
Each nutrient plays a different role in supporting container-grown indoor plants.
N
Nitrogen
Leaf & foliage growth
WHY NITROGEN MATTERS
Nitrogen is an essential part of normal vegetative growth. It supports leaf and shoot development and contributes to chlorophyll formation.
- Supports healthy foliage development.
- Contributes to normal chlorophyll production.
- Supports active vegetative growth.
CompleteGrow combines nitrogen with phosphorus, potassium and micronutrients for broader, balanced plant nutrition.
P
Phosphorus
Roots & energy transfer
WHY PHOSPHORUS MATTERS
Phosphorus supports normal root development and plays an important role in the way plants store and transfer energy during growth.
- Supports healthy root development.
- Contributes to normal energy-transfer processes.
- Works alongside nitrogen and potassium.
Requirements can vary between plant species, potting mixes and stages of growth, so always follow the product directions.
K
Potassium
Strength & water balance
WHY POTASSIUM MATTERS
Potassium contributes to normal water regulation, enzyme activity and several processes involved in healthy plant growth.
- Supports normal water regulation.
- Contributes to general plant vigor.
- Supports balanced plant development.
Potassium complements nitrogen and phosphorus by supporting important internal plant processes.
Micronutrients
Supporting the smaller details
WHY MICRONUTRIENTS MATTER
Plants require some mineral nutrients in much smaller quantities than nitrogen, phosphorus and potassium, but they still contribute to normal plant development.
- Support normal plant metabolic processes.
- Complement the primary NPK nutrients.
- Help provide a more complete feeding profile.
Together, primary nutrients and micronutrients provide a broader nutritional foundation for indoor plants growing in containers.
Made for plants that live in pots.
Balanced nutrition designed for houseplants grown in pots, planters and indoor containers.
Indoor Plant Food Concentrate Fertiliser 100ml Makes 100 Litres
Looking for the best fertiliser for indoor plants? CompleteGrow’s Indoor Plant Fertiliser (NPK 16-4-14) is a professional-grade, low-phosphorus fertiliser formulated for delicate houseplants like aroids, ferns, pothos, and peace lilies. This gentle formula promotes lush leaves, strong roots, and steady growth without the risk of nutrient burn. Mix just 1 mL per litre of water — making it one of the most economical and effective fertilisers for indoor plants in Australia.
✅ Low-phosphorus NPK 16-4-14 formula safe for all indoor plant types
✅ Promotes lush foliage, stronger roots, and steady growth
✅ Fast-absorbing liquid indoor plant fertiliser — mix 1 mL per litre of water
✅ Ideal for aroids, ferns, pothos, philodendrons & peace lilies
✅ Australian-made – ships fast & free
NPK Ratio — Indoor 16-4-14
-
N
16
-
P
4
-
K
14
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.
FAQ
Yes! The gentle 16-4-14 ratio is ideal for aroids, ferns, calatheas, succulents, hoyas, and more. It won’t burn roots or overwhelm sensitive plants.
Each 100ml bottle makes up to 100 litres of nutrient solution — enough to feed dozens of plants for months.
Too much phosphorus can damage indoor roots. Our 4% level supports steady root growth without build-up — perfect for pots & indoor planters.
Yes! Just use at the recommended dilution — it’s designed for regular use without stressing plants.
