Liquid & powder plant fertilisers

Explore CompleteGrow’s range of liquid fertilisers, water-soluble NPK powders and specialty plant nutrients for indoor plants, vegetables, flowering plants, fruit trees, citrus, lawns and gardens. Choose from balanced NPK fertilisers, flowering and fruiting formulas, Cal-Mag and plant-specific feeds designed for easy mixing and reliable nutrient delivery.

CompleteGrow fertilisers are designed to make plant nutrition easier to understand. Our range includes balanced NPK fertilisers for general plant growth, higher potassium and phosphorus formulas for flowering and fruiting, calcium and magnesium supplements, indoor plant fertilisers, citrus fertilisers, lawn fertilisers and specialist products for different growing conditions.

For gardeners looking for a versatile fertiliser, CompleteGrow NPK 20-20-20 provides equal proportions of nitrogen, phosphorus and potassium, making it suitable for a broad range of plants through vegetative growth and general maintenance. Our Advanced 4-18-38 formula is designed for plants entering flowering and fruit development, with increased phosphorus and potassium alongside calcium and magnesium.

Liquid plant food is a convenient option for regular feeding in pots, gardens and containers because it can be diluted directly into irrigation water. Water-soluble powdered fertilisers are ideal where growers want accurate nutrient control, economical bulk mixing and easy storage.

CompleteGrow products are suitable for home gardeners, plant collectors, hydroponic growers and commercial users across Australia. Whether you are feeding vegetables, herbs, flowering plants, citrus trees, indoor foliage plants, lawns or fruiting crops, selecting the correct NPK ratio and application rate helps provide plants with the nutrients they require at each growth stage.

Shop CompleteGrow fertilisers online in Australia and compare liquid fertiliser, soluble NPK fertiliser, Cal-Mag, flowering fertiliser, fruiting fertiliser and specialist plant food in one place.