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NPK 4-18-38 + Ca + Mg Soluble powder

Fruit & Flower Fertiliser Bundle | NPK 4-18-38 Kit

Advanced Fruit & Flower Feeding

A high-performance flowering and fruiting system with 4kg of Advanced NPK 4-18-38, separate calcium and magnesium nutrition, and a reusable hose-end sprayer.

What’s included?

Advanced NPK 4-18-38 System4KGFlower & Fruit Nutrition▼

✓Advanced 4-18-38 nutrition for flowering and fruit development✓Includes separate calcium and magnesium components✓Suitable for tomatoes, citrus, fruit trees, roses and flowering plants✓Mix and apply each component separately

Hose-End Fertiliser SprayerReusable 1L Applicator▼

✓Connects directly to a standard garden hose✓Fast and even application across larger garden areas✓Reusable for regular flowering and fruiting feeds

$140.00

Compare kits

Starter Plant $105.00 View kit

Garden Growth $138.00 Medium gardens View kit

Viewing Fruit & Flower $140.00 NPK 4-18-38 Kit

Commercial Pro $315.00 20L All Purpose + 2L Cal-Mag + Sprayer View kit

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Description

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Advanced Bloom & Fruit Bundle

More blooms. Stronger fruit. Bigger yields.

A high-performance feeding system for flowering and fruiting plants, combining 4kg of Advanced NPK 4-18-38, separate calcium and magnesium support, and a reusable hose-end sprayer.

✓
High phosphorus and potassiumNPK 4-18-38

✓
Separate calcium and magnesium support

✓
Reusable hose-end sprayer included

Everything Included

Engineered for massive blooms and heavy production

Targeted nutrition during critical bloom stages paired with clean, fast, and controlled hose-end application.

4kg Advanced Formula NPK 4-18-38 Fertiliser

Explosive Yield Booster
4 Kilograms

Advanced NPK 4-18-38

A professional soluble mineral powder packed with elevated phosphorus and potassium to fuel fruit expansion, deep bloom development, and elite structural strength.

✓ Drives plant energy straight into flowers & fruit

✓ Integrated calcium & magnesium prevents bud rot & deficiencies

The secret formula behind Matt's record-breaking 78kg pumpkin!

Precision application
1 Litre

Hose-End Sprayer

Heavy-duty, click-and-spray mechanism engineered to handle dissolved mineral mixtures flawlessly with zero waste or messy measuring cups.

✓ Click onto any standard Australian garden hose

✓ Adjustable dilution setting for custom crop requirements

Reusable design built to last season after season

Advanced flowering and fruiting nutrition

Why bloom nutrients matter

During flowering and fruiting, plants need a different nutrient balance. The Advanced Bloom Bundle provides targeted support for more flowers, stronger fruit development and productive harvests.

Tomato plant showing how advanced bloom nutrition supports flowering, fruiting, calcium and magnesium demand and nutrient uptake

1
More productive growthSupports flowering and fruit formation instead of excessive leafy growth.

2
Complete mineral supportSeparate calcium and magnesium support demanding fruiting plants.

3
Easy to prepareWater-soluble formulas dissolve cleanly for reliable hose-end application.

Targeted crop suitability

Made for flowering and fruiting plants

Targeted nutrition for productive crops during flowering, fruit development and high-demand growth.

🍋
Citrus treesLemons, limes and oranges

🍅
Fruiting cropsTomatoes and peppers

🎃
Heavy feedersPumpkins and melons

🌸
Flowering shrubsHydrangeas and ornamentals

🍓
Berry plantsPatches and fruit orchards

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Flower bedsRoses and ornamentals

i
Use as directed: Follow the supplied mixing instructions. Use half strength for sensitive plants such as orchids, bonsai, succulents and tender indoor plants.

Reviews

Be the first to review this product

Tried it in your garden? Tell other gardeners how it went — and share a photo of what you’re growing.

Feed Your Plants

Watch Them Thrive

Advanced feeding for bigger blooms, stronger fruiting and serious results.

The Advanced Bloom Bundle combines 4 kg of Advanced NPK 4-18-38 with separate calcium and magnesium support, plus a reusable hose-end sprayer for fast and even application.

🌱 High phosphorus and potassium 4-18-38 Targeted nutrition for flowering and fruit development.

High P & K

Ca Mg Separate calcium and magnesium support Supports plant structure and productive fruiting stages.

Added support

🌸 Built for flowering and fruiting stages Use when buds, flowers and fruit begin developing.

Productive growth

💧 Precision hose-end sprayer included Apply fertiliser quickly and evenly across more plants.

Easy application

✓ Buy with confidence Secure online checkout

🌿 Targeted nutrition ✓ Designed for home growers 🌸 Flower and fruit support 💧 Fast, even application

Matt with a 78 kilogram giant pumpkin grown using CompleteGrow Advanced 4-18-38 fertiliser

78KG

Real grower result

Giant pumpkin grown by Matt using Advanced 4-18-38.

“ Advanced 4-18-38 delivered strong flowering and an exceptional final result.

Matt, home grower Real grower result

General fertiliser

Leafy tomato plant with limited flowering and fruit development

More leaf growth General feeds may continue pushing foliage instead of production.

Less bloom focus Not specifically balanced for peak flowering stages.

Limited fruit support Less targeted nutrition for fruit set, filling and quality.

Advanced Bloom Bundle

Fruiting tomato plant and flowering ornamental plant

✓

High P & K formula Targeted nutrition for flowering and fruit development.

✓

More bloom support Supports abundant flowering in ornamentals and productive plants.

✓

Stronger fruit development Supports fruit set, filling, strength and overall crop quality.

Flowering support For roses, orchids, flowering shrubs and ornamentals.

Fruiting support For tomatoes, chillies, citrus and productive crops.

Targeted nutrition Designed for peak flowering and fruiting stages.

How Much to Mix

Use on Setting A during flowering and fruit development. Stir well, do not mix the bags together, and apply each product separately.

CompleteGrow 1L hose-end fertiliser sprayer

1L Setting A Included hose-end sprayer Use the mixing amounts below in this bottle.

Advanced formula 4-18-38

Mix and apply each bag separately

This bundle includes three separate packs. Prepare each one in the 1L sprayer bottle using the exact amounts below.

Important: Stir well. Do not mix bags together.

Flowering & fruiting formula

4-18-38

200g 4-18-38 bag
+ 800ml water EC 1.8 / ≈1280 ppm

Separate support pack

Calcium

100g calcium bag
+ 900ml water Apply separately

Separate support pack

Magnesium

50g magnesium bag
+ 950ml water Apply separately

✓ Add the product first, add water, and stir well. Connect the sprayer to your hose, apply evenly, then empty and rinse the bottle before preparing the next mix.

Be the first to review this product

Tried it in your garden? Tell other gardeners how it went — and share a photo of what you’re growing.

I started using the 4-18-38 when my tomatoes and capsicums began flowering. The plants set noticeably more fruit and the tomatoes developed well without pushing excessive leafy growth. Mixing each pack separately takes a little longer, but the instructions are clear and the sprayer makes application easy.

Roger T

Verified Buyer

Very happy with the results so far. I used the 4-18-38 on my citrus, flowering plants and vegetable garden, with the calcium and magnesium applied separately as directed. Flowering has been stronger and the fruiting plants look healthier and more productive.

Camilla E

Verified Buyer

Advanced Bloom & Fruit Fertiliser Bundle for Flowering and Fruiting Plants

The CompleteGrow Advanced Bloom & Fruit Bundle is a targeted feeding system for flowering and fruiting plants. It combines 4kg of Advanced NPK 4-18-38, separate calcium and magnesium support, and a reusable hose-end sprayer for easy garden application.

Ideal for tomatoes, capsicums, pumpkins, melons, citrus, berries, flowering shrubs, roses and other productive crops.

Read full product details +

The high-phosphorus and high-potassium 4-18-38 formula is designed for use during flowering, fruit set and fruit development when productive plants require more targeted nutrition.

Calcium and magnesium are supplied in separate packs to provide additional support for plant structure, chlorophyll production, nutrient uptake and fruit development.

Prepare and apply the 4-18-38, calcium and magnesium separately according to the supplied mixing directions. Use Setting A with the included 1L hose-end sprayer and rinse the bottle between mixtures.

4KG

High-volume bloom nutrition A larger supply for regular feeding during flowering and fruit development.

NPK

Advanced 4-18-38 formula Targeted phosphorus and potassium support for blooms, fruit set and filling.

Ca Mg

Separate calcium and magnesium Additional mineral support for demanding flowering and fruiting plants.

💧

Hose-end sprayer included Fast, even fertiliser application directly from a standard garden hose.

What plants is the Advanced Bloom & Fruit Bundle suitable for?

It is designed for flowering and fruiting plants such as tomatoes, capsicums, pumpkins, melons, citrus trees, berries, roses, flowering shrubs and other productive crops.

Can I mix the 4-18-38, calcium and magnesium together?

No. Each product must be mixed and applied separately. Rinse the hose-end sprayer between mixtures and follow the supplied mixing directions.

When should I use the 4-18-38 formula?

Use it during flowering, fruit set and fruit development when plants need more targeted phosphorus and potassium support.

How do I apply the fertiliser?

Prepare each product in the included 1L hose-end sprayer, use Setting A and apply evenly around the plant root zone and surrounding soil. Stir each mixture well before use.