The second secret is the quality of the seeds. They must be proven and adapted. The soil also matters. You can not take it from the garden where the crucifixes grow. The pests that are preserved in it will destroy seedlings already at the early stage of its development. Use a proven recipe: mix humus with sod land (1: 1), add a tablespoon of ash 1 kg of soil. The composition should turn out to be easy and breathable.
