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NPK 20-20-20 + Ca + Mg Liquid concentrate

Starter Plant Fertiliser Bundle Kit

Starter Home GardenComplete 3-Part Kit

Take the guesswork out of plant care with a complete feeding system for everyday growth, maximum blooms, and effortless hose-end application.

What’s included in your kit:

All Purpose 20-20-20 Liquid Fertiliser1L · Balanced Everyday Nutrition▼

✓Everyday Growth: Balanced formula drives rapid, healthy plant growth✓Full-Plant Support: Promotes vibrant foliage, strong stems, and deep roots✓Versatile Use: Ideal for vegetables, fruit trees, flowers, and garden beds

Advanced 4-18-38 with Ca & Mg1kg · Flowering & Fruiting Formula▼

✓Targeted Yields: Specially formulated for peak flowering and fruiting cycles✓Bigger Blooms & Fruit: High P & K boost flower production and fruit size✓Stronger Structure: Calcium and Magnesium fortify cell walls against stress✓High Yield: Essential for heavy-producing vegetables and fruit trees

1L Hose-End Fertiliser SprayerReusable Hose-End Applicator▼

✓Hose-Ready: Snaps directly onto standard garden hose fittings✓Fast & Even: Dilutes automatically as you water for zero mess and quick feeding✓Wide Coverage: Effortlessly feeds whole garden beds, lawns, and large trees✓100% Reusable: Built for continuous, season-after-season use

$105.00

Compare kits

Viewing Starter Plant $105.00

Garden Growth $138.00 Medium gardens View kit

Fruit & Flower $140.00 NPK 4-18-38 Kit View kit

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

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Description

Complete Garden Starter Kit

One kit for everyday growth, flowers and fruit

Feed your mixed home garden through every growth stage with two complementary fertilisers and a reusable hose-end sprayer.

✓ Two targeted formulas

✓ Sprayer included

✓ Mixed garden use

How the kit works

One complete system for every stage of growth

Feed healthy everyday growth, support flowering and fruiting, then cover more of your garden with the included hose-end sprayer.

CompleteGrow All Purpose 20-20-20 Liquid Plant Fertiliser

Everyday nutrition

For regular feeding to support healthy leaves, active roots and steady growth.

IncludesAll Purpose 20-20-20 Liquid · 1 Litre

CompleteGrow Advanced 4-18-38 Flowering and Fruiting Fertiliser

Bloom & fruit support

Use when plants begin budding or fruiting to support more blooms and stronger fruit development.

IncludesAdvanced 4-18-38 + Ca + Mg · 1 Kilogram

CompleteGrow 1L Hose-End Fertiliser Sprayer

Quick & even application

Connect to your hose to feed pots, beds and larger areas faster with more even coverage.

Includes1L Hose-End Fertiliser Sprayer · Reusable

Use the All Purpose feed for regular growth and the Advanced Formula once plants begin flowering or fruiting. Mix and apply each product separately according to the included directions.

CompleteGrow feeding guide showing vegetative, flowering and fruiting stages with the recommended fertiliser for each stage

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Everyday growth

Strong roots and lush foliage

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Flowering support

More blooms and colour

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Fruiting support

Bigger, better harvests

Made for mixed gardens

Feed more of your garden with one kit

Suitable for edible plants, flowering gardens, fruit trees, shrubs and established ornamentals.

🥬 Vegetables
🌿 Herbs
🍋 Citrus
🍎 Fruit trees
🌸 Flowers
🌳 Shrubs
🪴 Ornamentals
🌱 Seedlings
🪴 Potted plants
🌱 Garden beds
🌴 Established plants
🌲 Hedges

Important: Apply the All Purpose and Advanced fertilisers separately. The NPK, calcium and magnesium components in the Advanced Formula must also be mixed and applied separately according to the included directions.

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

Simple. Balanced. Effective.

Everything your garden needs to thrive

Balanced everyday nutrition, targeted flowering and fruiting support, and easier application in one practical starter kit.

Balanced support for active growth Help maintain healthy leaves, stronger stems and active roots.

Targeted flowering and fruiting nutrition Support productive growth when buds, flowers and fruit begin forming.

Faster, more even garden coverage Apply fertiliser across more of your garden using the included sprayer.

Healthy mixed home garden with vegetables and productive plants

🌿 Healthy growth Lush leaves and strong plants

🌸 More flowers Support productive stages

🍅 Better harvests Help fruiting plants thrive

🥬 Vegetables 🌿 Herbs 🍋 Citrus 🍎 Fruit trees 🌸 Flowers 🌳 Shrubs 🪴 Ornamentals ＋ And more

Find the right bundle for your garden

Choose the right size for your garden

Choose the Starter Kit for a small mixed garden, or step up to Garden Growth when you need more fertiliser for regular feeding across a larger area.

Swipe to compare bundles

Best for getting started

✓ Best when you want everyday feeding, bloom and fruit support, and a sprayer in one starter system.

What is included

All Purpose fertiliser 1L

Bloom and fruit formula 1kg

Hose-end sprayer Included

Garden size Small gardens

Best for Mixed plant types

Main benefit Complete starter system

✓ Best when you need a larger supply for frequent feeding across more pots, beds or established plants.

What is included

All Purpose fertiliser 4L

Calcium and magnesium support 1L

Hose-end sprayer Included

Garden size Medium gardens

Best for Regular feeding

Main benefit More everyday fertiliser

How Much to Mix

Add the amounts shown directly to the included 1L hose-end sprayer.

1L Included hose-end sprayer

Mix each product directly in this bottle.

Everyday feeding

All Purpose 20-20-20

Choose the feeding strength suited to your plants.

Light 150ml fertiliser
+ 850ml water EC 0.6

Medium 250ml fertiliser
+ 750ml water EC 0.9

Heavy 300ml fertiliser
+ 700ml water EC 1.9

Flowering and fruiting

Advanced 4-18-38

Prepare the NPK, calcium and magnesium separately.

Do not mix the bags together

NPK Bag 200g fertiliser
+ 800ml water EC 1.8
≈1280 ppm

Calcium Bag 100g calcium
+ 900ml water Apply separately

Magnesium Bag 50g magnesium
+ 950ml water Apply separately

✓ Add the fertiliser first, add the water, mix well, connect the sprayer to your hose and rinse it before preparing another product.

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.

The NPK 20-20-20 has been great for my general garden feeding. It is easy to mix, simple to apply with the sprayer, and my plants responded really well with healthier green growth. A really handy all-purpose fertiliser for keeping a wide range of plants looking strong and healthy.

Kenny T

Verified Buyer

The Advanced 4-18-38 formula has been excellent for my tomatoes. I noticed better flowering, stronger plant performance and really good results once I started using it properly with the separate calcium and magnesium bags. A great option when you want to push flowering and fruiting stages more effectively.

Katy E

Verified Buyer

Complete Plant Fertiliser Bundle for Healthy Garden Growth

Give your garden a complete feeding system with the CompleteGrow Starter Plant Fertiliser Bundle Kit. It includes All Purpose 20-20-20 liquid fertiliser for regular plant growth, Advanced 4-18-38 flowering and fruiting fertiliser, separate calcium and magnesium, and a reusable 1L hose-end sprayer. Suitable for vegetables, herbs, citrus trees, fruit trees, flowers, shrubs and ornamental plants, this garden fertiliser bundle supports healthy foliage, stronger flowering and productive fruiting. Clear mixing rates make application simple and accurate, giving home gardeners an all-purpose plant fertiliser and targeted bloom fertiliser in one convenient kit.

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Complete garden nutrition

Includes everyday feeding plus targeted flowering and fruiting support.

🌸

Supports every growth stage

Feed healthy foliage first, then support stronger flowers and productive fruiting.

🚿

Reusable sprayer included

Connects directly to a standard garden hose for faster, more even application.

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Made for mixed gardens

Suitable for vegetables, herbs, citrus, fruit trees, flowers, shrubs and ornamentals.

What is included in the Starter Plant Fertiliser Bundle Kit?

The Starter Plant Fertiliser Bundle Kit includes CompleteGrow All Purpose 20-20-20 Liquid Fertiliser, Advanced 4-18-38 Fertiliser with separate calcium and magnesium, and a reusable 1L hose-end fertiliser sprayer. It provides a practical garden fertiliser setup for everyday plant growth, flowering and fruiting stages.

What plants can I use this garden fertiliser bundle on?

This plant fertiliser bundle is suitable for a wide range of home garden plants, including vegetables, herbs, citrus trees, fruit trees, flowers, shrubs and ornamental plants. Use the All Purpose 20-20-20 for general plant feeding and the Advanced 4-18-38 for flowering and fruiting plants.

How do I mix and apply the fertiliser with the hose-end sprayer?

The All Purpose 20-20-20 is a balanced liquid plant fertiliser designed for regular feeding and healthy general growth. The Advanced 4-18-38 is a specialised flowering and fruiting fertiliser supplied with separate calcium and magnesium bags. Each Advanced Formula bag must be mixed and applied separately.

How do I use CompleteGrow fertiliser bundles for best results?

Measure the recommended amount of garden fertiliser into the included 1L hose-end sprayer bottle, add the stated amount of water and mix thoroughly. Connect the sprayer to your garden hose and apply evenly. Rinse the bottle before changing products or preparing the next Advanced Formula bag.