Phased Release 18-3.5-8 +1Mg Fertiliser 20kg is a professional, organic-based lawn and turf fertiliser designed to deliver consistent, controlled nutrition over an extended period. Ideal for gardeners, landscapers, and groundskeepers, this high-performance fertiliser supports steady, healthy growth across lawns, paddocks, sports turf, and ornamental planting areas.
With a balanced 18-3.5-8 NPK formulation plus 1% magnesium, this fertiliser provides essential nutrients for sustained turf performance. The high nitrogen content promotes strong leaf and shoot growth, while phosphate supports root development and potassium enhances plant strength and stress resistance. Added magnesium (Mg) boosts chlorophyll production, improving lawn colour and maximising nutrient uptake.
Its advanced phased release technology (12–16 weeks) ensures nutrients are delivered gradually, reducing the risk of scorching and excessive growth flushes. The mini-granular (1–2.5mm) formulation allows for even application and efficient absorption, making it ideal for fine turf, high-quality lawns, and sensitive planting areas.
Features & Benefits
- Phased Release (12–16 Weeks) – Long-lasting, controlled nutrient delivery
- High Nitrogen (18%) – Encourages steady, healthy grass growth
- Balanced NPK + Magnesium – Supports roots, colour, and plant vitality
- Mini-Granular (1–2.5mm) – Even spread and consistent coverage
- Reduced Scorch Risk – Gentle feeding ideal for fine turf
- Improves Turf Strength – Enhances resilience to stress and wear
- Versatile Application – Suitable for lawns, paddocks, turf, and ornamentals
Applications
- Domestic and commercial lawns
- Sports turf and playing fields
- Paddocks and pasture grass
- Trees and ornamental plants
- Amenity and landscaped areas
- Newly seeded or establishing grass
Sizes
Application Rate
Coverage:
Technical Specification
- Product Type: Phased Release Mini Granular Fertiliser
- NPK: 18-3.5-8 +1Mg
- Nitrogen (N): 18%
- Phosphate (P₂O₅): 3.5%
- Potassium (K₂O): 8%
- Magnesium (Mg): 1%
- Granule Size: 1–2.5mm
- Pack Size: 20kg
- Coverage: Up to 400m²
- Application Method: Spreader or hand application
- Nutrient Release: 12–16 weeks
- Usage Period: Spring, summer, autumn
- Suitable Areas: Lawns, sports turf, paddocks, ornamentals