Lawnsmith Extra-Long Fertiliser for Clay Soil

Key Features
Spring application for 5-6 month slow release feeding
Perfect if you only want to feed once or twice a year
Green grass & gentle growth in Spring and Summer

Buy more and save

Buy 2+ save 5%
Buy 4+ save 9%
Buy 6+ save 12%
Buy 8+ save 14%
Buy 10+ save 16%

Make light work with these Spreaders



Application Rates

  • Typical application rate: 2.5-3.5 kilos per 100m2
  • Enhanced rate for improved growth & greening: 3.5-4.5 kilos per 100m2

Directions for Use

  • This is a granular product to be applied by spreader or by hand
  • Lawn Fertiliser for clay loam to dark, heavy or clay based soils
  • No watering required if soil moisture available
  • Can be applied before or after rain
  • For best result apply between March and end of May
  • For improved winter appeal partner with AUTUMN lawn food
  • Will not cause staining to hard surfaces
  • Lawn may be used immediately after application

Lawn Fertiliser Analysis NPK: 26-0-12

  • 26% Nitrogen, 0% Phosphate, 12% Potassium
  • Zero phosphate for clay, rich or organic soils
  • Potassium for improved moisture control and drought tolerance
  • 1.5% magnesium for colour and health
  • 70% very slow release nitrogen for 5-6 month trickle feeding
  • 30% quick release nitrogen for immediate results without excess mowing

Buying Guides


Season for Application
Early Spring, Late Spring,
Intended Use
Feeding the Lawn
Lawn Safety after Treatment
None hazardous for children, dogs and cats
Soil Type
Lasts for
Extra Slow 20-24 weeks
Method of Application
By hand or spreader
Nutrient Content
Nitrogen, Potassium, Magnesium,
Granule Size
2 to 3mm
Size and Coverage
2.5Kg Bag covers 85m2, 5Kg Bag covers 170m2, 10Kg Bag covers 330m2, 20Kg Bag covers 670m2,
Product Type

Customer reviews

4.7 / 5
182 reviews for Lawnsmith Extra-Long Fertiliser for Clay Soil
eKomi customer reviews
Easily applied, grass improvements seen already
Rated 5 out of 5
George Rumney
Have used for number of years lawn greatly improved.
Rated 5 out of 5
Silvia Park
I’m very pleased with this product. I buy it every spring and I don’t need to worry about the grass the whole summer. I even noticed it kills the moss without darkening the grass. It’s a must! Perfect if you can’t be bother fertilising the grass every few weeks. You sprinkle it on and forget about it!
Rated 5 out of 5
Keith Alford
Easy to apply. No need to water in. Lawn can be used immediately after application.
Rated 5 out of 5
Neil Montague
Good product - easy to spread using hand spreader and then sit back and enjoy a whole season of healthy green thick grass
Rated 5 out of 5