GT Spring Summer 20-10-10 Fertiliser 25kg is a powerful, fast-acting lawn feed designed to kickstart growth and improve the health and colour of grass during the active spring and summer growing season. Its high-nitrogen formula encourages vigorous leaf and shoot growth, while the balanced levels of phosphate and potassium support strong root development and overall turf resilience.
This professional-grade fertiliser is ideal for gardeners, landscapers, and turf care specialists looking to rejuvenate tired lawns, green-up grass quickly, and maintain lush coverage through the warmer months. Suitable for use on both domestic and commercial lawns, this 25kg bag offers excellent coverage for large areas.
Features & Benefits
High nitrogen (20%) for quick green-up and strong shoot growth
Balanced 20-10-10 NPK ratio promotes healthy, dense turf
Granular formulation for even, consistent application
Encourages both top growth and strong root support
25kg bag covers up to 714m²
Fast visible results for lawns that need a spring or summer boost
Applications
Domestic lawns and gardens
Landscaped grounds, estates, and parks
Commercial green spaces and housing developments
Turf renovation and repair after winter wear
Application Rate:
Apply at 35g/m². One 25kg bag treats approximately 714m².
How to Apply:
Use a spreader to apply evenly to dry grass.
For best results, apply during periods of active growth between March and August.
Water in after 48 hours if no rain occurs.
Avoid mowing 2–3 days before and after application.
Formulation Breakdown:
Nitrogen (N): 20% – Rapid leaf and shoot growth
Phosphate (P₂O₅): 10% – Supports root development
Potassium (K₂O): 10% – Improves drought resistance and turf strength

Specification Details
Product Name GT Spring Summer 20-10-10 Fertiliser
Nutrient Analysis 20-10-10 (NPK)
Format Granular fertiliser
Application Rate 35g/m²
Coverage 714m² per 25kg bag
Bag Size 25kg
Application Method Spreader
Usage Period March to August (spring/summer)