Free 100ml Indoor Plant Food on $100+ Orders — Code: FREEFOOD
NEW Advanced Formula NPK 4-18-38 + Calcium & Magnesium
$39.90 – $387.00
Complete 3-part nutrient system for flowering & fruiting plants
✅ NPK 4-18-38 for strong flowering & fruiting
✅ Includes Calcium Nitrate & Magnesium Sulphate
✅ Suitable for hydroponics and soil-based growing
✅ Supports all stages of plant growth
Australian Owned & Manufactured
Free Shipping
Boost Plant Growth
NPK 4-18-38 + Calcium and Magnesium
A complete, high-performance nutrient system for vegetables, herbs, and leafy greens. This three-part formula provides all essential macro and micronutrients required throughout every stage of plant growth — from seedling to harvest.
Suitable for both hydroponic and soil-based growing.
This Complete Nutrient Set Includes:
- NPK 4-18-38: High phosphorus and potassium to support flowering and fruiting
- Calcium Nitrate: Promotes strong cell structure and calcium uptake
- Magnesium Sulphate: Supports chlorophyll production and nutrient transport
Guaranteed Analysis:
| Nutrient | Percentage (%) |
|---|---|
| Total Nitrogen (N) | 4% |
| Phosphate (P₂O₅) | 18% |
| Potash (K₂O) | 38% |
Each component is designed to work together for healthy, productive plants.
Feeding instructions and mixing ratios are clearly listed on the package.
NEW Advanced Formula NPK 4-18-38 + Calcium & Magnesium
✅ NPK 4-18-38 for strong flowering & fruiting
✅ Includes Calcium Nitrate & Magnesium Sulphate
✅ Suitable for hydroponics and soil-based setups
✅ Boosts yield, flavour, and overall plant health
✅ Australian made – ships fast & free
NPK Ratio
- N 4
- P 18
- K 38
What NPK 4-18-38 Means
Higher P and K to drive budding, flowering and fruit quality while keeping foliage compact.
- Fruiting & flowering: Tomatoes, peppers, berries, cucurbits, roses, citrus.
- Compact growth: Low N helps prevent stretch; pushes blooms & fruit load.
- Already with Cal-Mag: Calcium (19%) strengthens cell walls; Magnesium (9.6%) powers photosynthesis and nutrient movement.
Read More
The 4-18-38 profile prioritises phosphorus and potassium. Phosphorus supports stronger roots and abundant flower initiation, while potassium drives colour, flavour and overall resilience. The modest nitrogen helps prevent stretch, directing energy into blossoms and fruit load. With added Calcium Nitrate and Magnesium Sulphate, plants also receive structural strength, resistance to tip burn, and improved chlorophyll activity.
- Seedling mix and Grow & Bloom recipes included for every stage.
- Gentle on roots; ideal for frequent feeding schedules.
- Works with soil, hydroponics and foliar applications.
Best For These Plants
Perfect for Fruiting Vegetables & Herbs
NPK Fertilizer for Root-to-Bloom Growth
How it Works
Mix all 3 parts
Feed Your Plants
Watch Them Thrive
Reviews From Our Gardener's
Lucas M
Verified Buyer
Sarah L
Verified Buyer
FAQ
✔️ NPK 4-18-38 for balanced flowering nutrition
✔️ Calcium Nitrate for cell strength
✔️ Magnesium Sulphate for chlorophyll & transport
The Grow Blog: News, Tips, & Stories
What is NPK 20-20-20 Fertiliser?
