#npkfertiliser

Complete Grow Advanced Formula – NPK 4‑18‑38 + CaMg

Meet your plant’s new favourite feed.

This high-performance powdered fertiliser is formulated with a strong NPK ratio (4-18-38) + added Calcium Nitrate and Magnesium Sulphate — perfect for fruiting crops, leafy greens, and hydroponic systems.

✅ High potassium for flowering & fruiting ✅ Supports strong roots & disease resistance ✅ Ideal for tomatoes, capsicums, leafy greens & herbs ✅ 100% water-soluble – great for fertigation or foliar spray ✅ Compatible with coco, soil, and hydroponic setups

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Flowering plants need extra care to bloom beautifully. A good fertilizer for flowering plants supplies the nutrients they need to produce abundant, colourful, and long-lasting flowers. The right balance of nitrogen, phosphorus, and potassium (NPK) ensures strong stems, lush foliage, and vibrant blooms.

If your flowers are slow to form or the blooms fade quickly, they’re probably short on phosphorus and potassium—the two nutrients most responsible for flower and fruit production. Choosing a fertilizer to make plants bloom is the key to unlocking their full potential.

Understanding Nutrients for Flowering Plants

Flowering plants have three main nutritional needs:

Nitrogen (N): builds green leaves and stems.

Phosphorus (P): promotes bud formation and flower size.

Potassium (K): strengthens stems and intensifies colour and fragrance.

When you want more flowers and fewer leaves, choose a fertilizer with lower nitrogen and higher phosphorus and potassium.

CompleteGrow NPK 4-18-38 + Calcium & Magnesium is one of the best fertilizers for flowering plants. Its phosphorus-rich formulation helps create bigger blooms and more buds, while calcium and magnesium support cell structure and deep colour development.

For general feeding between flowering cycles, the CompleteGrow NPK 20-20-20 All Purpose Liquid Fertiliser maintains balanced nutrition for steady growth and recovery.

When and How to Fertilize Flowering Plants

Timing matters when it comes to bloom quality. Here’s how to feed flowering plants for the best results:

Early Growth Stage: Use CompleteGrow NPK 20-20-20 All Purpose Liquid Fertiliser to build foliage and roots.

Pre-Bloom Stage: Switch to CompleteGrow NPK 4-18-38 + Calcium & Magnesium to encourage bud formation.

Full Bloom Stage: Continue with 4-18-38 every 1–2 weeks to extend flowering and strengthen colour.

Application tips:

Mix 4–6g per litre of water (for soluble powder) or 4–5mL per litre (for liquid formulas).

Apply every 7–10 days during the flowering season.

Water thoroughly after feeding to prevent salt buildup.

Avoid high nitrogen fertilizers during flowering, as they promote foliage over blooms.

This feeding schedule works perfectly for both indoor and outdoor flowering plants—including roses, hibiscus, bougainvillea, orchids, geraniums, and other ornamentals.

Choosing a Good Fertilizer for Flowers

When selecting a good fertilizer for flowers, look for these key traits:

High phosphorus (P) for better blooms.

High potassium (K) for colour, fragrance, and disease resistance.

Trace elements like calcium, magnesium, and iron for overall vitality.

Fast-dissolving liquid or powder for quick, visible results.

All CompleteGrow formulas are 100% water-soluble, Australian-made, and suitable for both foliar feeding and root drenching.

FAQs About Flowering Plant Fertilizer

What is the best fertilizer for flowering plants? A phosphorus-rich fertilizer such as CompleteGrow NPK 4-18-38 + Calcium & Magnesium is ideal for promoting abundant blooms and stronger roots.

Can I use the same fertilizer for roses and orchids? Yes—both respond extremely well to a low-nitrogen, high-phosphorus formula like NPK 4-18-38 + Calcium & Magnesium.

How often should I fertilize flowering plants? Feed every 1–2 weeks during active blooming, and reduce frequency during cooler or dormant months.

What’s better: liquid or granular fertilizer? Liquid fertilizers act faster and are easier to control—especially for potted and indoor flowering plants.

Will too much fertilizer damage flowers? Yes—overfeeding can cause leaf burn or reduce flowering. Always dilute according to the label and feed moderately.

Final Thoughts

Feeding your flowering plants with the right fertilizer ensures radiant colours, longer-lasting blooms, and stronger overall growth. Consistent care paired with a high-quality nutrient program transforms your garden into a vibrant display of health and beauty.

Fruit trees need more than sunshine to thrive—they rely on balanced nutrition throughout the growing season. The right fertilizer for fruit trees promotes strong roots, healthy leaves, and abundant, flavourful fruit. Whether you’re tending to citrus, apples, or passionfruit, feeding correctly can make the difference between an average harvest and an exceptional one.

Understanding What Fruit Trees Need

Every fruit tree’s performance depends on three core nutrients:

Nitrogen (N) – for lush green leaves and strong growth.

Phosphorus (P) – for root and flower development.

Potassium (K) – for fruit size, colour, and sweetness.

A balanced formula such as CompleteGrow NPK 20-20-20 All Purpose Liquid Fertiliser is ideal for maintaining steady growth in most fruit species. During flowering and fruiting, switch to a high-phosphorus and potassium blend like CompleteGrow NPK 4-18-38 + Calcium & Magnesium to improve fruit set, flavour, and resilience.

These formulas are fully water-soluble, ensuring fast uptake and precise feeding through soil drench or fertigation systems.

When and How to Fertilize Fruit Trees

Timing and consistency are key:

Spring: Feed with NPK 20-20-20 to drive new leaves and root growth.

Pre-Flowering (late spring): Apply 4-18-38 + CaMg to support strong buds and early fruit formation.

Summer: Continue fortnightly feeding to maintain energy for fruit swelling.

Autumn: Reduce nitrogen and give a final light feed of 4-18-38 + CaMg before dormancy.

Always apply diluted fertilizer evenly around the drip line of the tree (where the feeder roots are most active), then water deeply. Avoid heavy feeding during winter when the tree’s nutrient demand slows.

For passionfruit and citrus trees, regular light applications produce the best flavour and prevent deficiencies. Citrus in particular benefit from steady potassium and magnesium for juicier, sweeter fruit.

Choosing a Good Fertilizer for Fruit Trees

A good fertilizer for fruit trees should:

Contain a balanced NPK ratio or a targeted bloom-boosting formula.

Include trace elements such as calcium, magnesium, and iron.

Be 100 % water-soluble for efficient absorption.

Work in both soil and hydroponic systems.

CompleteGrow’s fertilizer range meets all these needs, offering professional-grade quality for home growers. The 20-20-20 All Purpose Liquid Fertiliser supports vegetative growth, while 4-18-38 + CaMg maximises fruiting potential. Both are Australian-made and formulated for local soils and climates.

FAQs About Fertilizing Fruit Trees

What is the best fertilizer for fruit trees? Use a balanced fertilizer like CompleteGrow NPK 20-20-20 for general feeding and NPK 4-18-38 + CaMg during flowering and fruiting.

How often should I fertilize fruit trees? Every 3–4 weeks in spring and summer; less frequently in cooler months.

Can I use the same fertilizer for citrus and passionfruit? Yes, both respond well to the same nutrient balance—particularly those high in potassium and magnesium.

How soon will I see results? Within 2–3 weeks of regular feeding, you’ll notice greener foliage and stronger new growth.

Final Thoughts

Feeding your trees with a complete, balanced fertilizer keeps them productive for years. Consistent nutrition ensures vigorous growth, disease resistance, and superior fruit quality.