Iron(II) Sulphate

Description

Iron(II) sulphate (FeSO₄) is used in the garden sparingly and carefully.

Useful for acidifying soil and controlling moss.

Common uses

For soil

• Lowers pH, acidifying the soil
• Useful in calcareous, alkaline soils
• Helps acid-loving plants such as blueberries and rhododendrons

For lawns

• Against moss
• Fast, visible action

⚠️ For treating iron deficiency in plants, iron chelate is a better choice than FeSO₄.

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Use in the garden

To acidify soil

• 30-50 g per 1 m²
• Work into the soil and water
• Apply in spring or autumn

Spraying, only in special cases

• 0.1-0.2% solution
• 10-20 g per 10 L of water
• Only on plants that tolerate it. ⚠️ It may scorch leaves

For lawns, against moss

• 20-30 g per 1 m²
• After 7-10 days, the moss turns black and dies
• Then rake it out

Do not use

❌ In hot, sunny weather
❌ Together with wood ash
❌ Regularly as a fertiliser

Safety ⚠️

• Stains stone, concrete and clothing
• Wear gloves
• Store in a dry place

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Short summary

• Iron deficiency → iron chelate
• Soil acidification → FeSO₄
• Moss on lawns → FeSO₄