Lawnsmith Green-Up Ferrous Sulphate

Key Features
A soluble powder for liquid application
The best way to get rid of moss in lawns
Greens grass without causing growth

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For price comparison this is a 'Super Agro Pro' NOT a 'Super Green'!



Application rates:

To be mixed with water - 'no blockage' mixing instructions supplied with product

  • Green-up Rate: Year round; 0.5 - 1 gram m2 for a green-up anytime ground moisture is available
  • Hardening Rate: September to December; 1.5 - 2 grams m2 for cool weather disease resistance
  • Acidifying Rate: Spring & Autumn; 2+ grams m2 will temporarily lower pH/increase acidity
  • Worm Cast Reduction: Spring & Autumn; 2 grams m will temporarily reduce surface casting. May need up to 3 applications approximately 2-4 weeks apart
  • Moss Rate: September to May; 4-5 grams m2 in cool wet conditions
  • Maximum rate: 5g m2 in cool wet conditions normally from September to May

Do NOT use on grass less than 6 months old at rates higher than 2g/m2

Directions for Use

  • Supplied in re-sealable plastic tubs
  • A soluble iron sulphate powder for application as a liquid
  • Easily applied by sprayer or watering can with sprinkle bar
  • Use as standalone treatment or in conjunction with a lawn fertiliser
  • Do NOT mix with weed killer
  • Zero nitrogen gives green lawns without grass growth
  • Aids in disease resistance and worm cast control
  • Will keep indefinitely if kept sealed in the tub in a cool environment
  • Keep off hard surfaces as staining will occur
  • Lawn may be used once dry but staining can occur for up to 24 hours
  • Grazing pets may be allowed on after 3 cuts

Buying Guides


Season for Application
Early Spring, Late Spring, Summer, Early Autumn, Late Autumn, Winter,
Intended Use
Greening (minimal growth), Winterising,
Lawn Safety after Treatment
Pets that eat grass/weeds to be kept off for 3 cuts, None hazardous for children, dogs and cats once dry, Staining to feet may occur for 24hrs,
Soil Type
Clay, Loam, Sandy, Chalk,
Lasts for
Normal 4-6 weeks
Method of Application
By sprayer or watering can
Nutrient Content
NO Nitrogen, Iron, Sulphur,
Granule Size
Soluble Powder
Size and Coverage
2.5Kg Tub covers 500m2 @ 5grams or 2500m2 @ 1gram, 5Kg Tub covers 1000m2 @ 5grams or 5000m2 @ 1gram, 10Kg Tub covers 2000m2 @ 5grams or 10000m2 @ 1gram,
Product Type
Moss Control, Fertiliser, Pest & Disease,
Disease prevention, Lower pH - acidify, Reduce worm casting,
When to Use
Early Spring, Late Spring, Early Autumn, Late Autumn, Winter,

Customer reviews

4.8 / 5
587 reviews for Lawnsmith Green-Up Ferrous Sulphate
eKomi customer reviews
Easy to use once the correct solution has been calculated. Not yet had time to work its magic so cannot comment on efficacy.
Rated 4 out of 5
Ian Beale
Very good - blackened the moss with one application.
Rated 5 out of 5
Peter Dance
The product is working as we speak, easy mixing instructions and application.
Rated 5 out of 5
james Thomson
I would recommend the products to family and friends . All the products are first class.
Rated 5 out of 5
Not easy to mix. I will use a ready mixed product next time
Rated 3 out of 5