When to Sieve Soil?

Soil sieves (or riddles) are useful for sifting out large lumps from soil, leaf mould and compost, to leave you with a fine material suitable for sowing seeds like salad leaves and sunflowers, or for potting mixes.

Why do we sieve soil?

Well, as a matter of fact we are using also 4 mm sieved soil. The main idea is to remove some particles, roots, stones, to make finally quite homogenic samples.