Indoor Plant Fertiliser for Monstera, Succulents & Houseplants – Targeted Nutrition for Healthy Growth
Explore Complete Grow’s premium indoor plant fertilisers, expertly formulated to support lush growth, vibrant leaves, and strong roots in popular houseplants like Monstera, pothos, fiddle leaf fig, and succulents. Designed for Australian plant lovers who want fast, reliable results.
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General fertilisers often miss the mark when it comes to indoor plants — that’s why we developed nutrient solutions tailored to indoor growing conditions. These fertilisers deliver the right balance of nitrogen, phosphorus, potassium, and micronutrients for healthy, controlled growth in low-light environments. Choose from: Indoor Plant Fertiliser – Optimised NPK 16-4-14 blend for Monstera, pothos, peace lily, and leafy indoor plants Succulent Fertiliser – Low-nitrogen, no-stretch formulation for compact growth and root strength Liquid Houseplant Food – Quick absorption and residue-free feeding for indoor use Foliar Sprays for Indoor Plants – Micronutrient-rich sprays to support stressed or nutrient-deficient leaves Cal-Mag Additive – Helps prevent calcium and magnesium deficiencies caused by tap water or soil depletion Every formula is made using high-purity, Australian-grade salts and chelated micronutrients for long shelf life, clean feeding, and visible results. Whether you grow a few potted plants or manage a full indoor collection, Complete Grow makes it easier to feed your plants with confidence.
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- Select options This product has multiple variants. The options may be chosen on the product page
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- Select options This product has multiple variants. The options may be chosen on the product page
- Quick View
- Select options This product has multiple variants. The options may be chosen on the product page
The Best Indoor Plant Fertiliser for Houseplants, Succulents & More – Trusted by Australian Growers
Explore Complete Grow’s full range of indoor plant fertilisers — designed to help your Monstera, pothos, snake plants, herbs, and succulents thrive with vibrant foliage, strong roots, and compact growth. Whether you’re caring for leafy green houseplants or low-maintenance succulents, our high-performance liquid fertilisers deliver targeted nutrition right to the roots.
From balanced indoor plant food blends to low-stretch succulent fertilisers and micronutrient boosters, every product is crafted with premium ingredients for easy, effective feeding. Perfect for home growers, apartment gardeners, and commercial indoor plant stylists.
What is Indoor Plant Fertiliser & Why Do You Need It?
Indoor plants rely entirely on potting mix, which often lacks the essential nutrients required for strong, long-term growth. That’s where indoor plant fertiliser comes in — delivering nitrogen, phosphorus, potassium, and trace elements directly to the root zone or leaf surface.
Each nutrient supports healthy plant development:
- Nitrogen drives new leaf growth and lush foliage
- Phosphorus promotes healthy roots and flowering in ornamentals
- Potassium enhances plant strength, drought tolerance, and colour
Without these nutrients, even low-maintenance plants like ZZ plants or jade can suffer from slow growth, yellowing leaves, or weak stems.
Why Choose Liquid Indoor Plant Food?
Liquid fertilisers are ideal for indoor plants because they offer fast nutrient absorption and precise control over feeding. Unlike granular fertilisers, they don’t build up salts in the soil or overfeed your plants.
All our formulas are:
- Easy to mix — just add to your watering can
- Gentle on roots — safe for regular use indoors
- Designed for houseplants, succulents, and container herbs
Popular options include our 16‑4‑14 indoor blend for lush leaf growth and our low‑nitrogen succulent fertiliser to encourage compact, clean form without stretching.
How Often Should You Feed Indoor Plants?
For best results, feed indoor plants with liquid fertiliser every 1–2 weeks during their active growing season (typically spring through early autumn). Reduce feeding in winter when growth slows.
Succulents and low-light plants may only need feeding once a month. Always dilute according to the label and ensure your pot has good drainage.
Indoor plants grow best when fed regularly with a well-balanced fertiliser — not all at once. With Complete Grow, your houseplants get consistent, reliable nutrition they can actually absorb.