Stratification should be understood as a special technique that promotes seed germination.
An expert of the online publication Belnovosti, agronomist, landscape designer Anastasia Kovrizhnykh explained what planting material should be subjected to this procedure.
Most often, stratification is needed for seed material of trees and shrubs.
Sometimes this rule applies to herbaceous perennials.
Seeds of southern crops that grow in regions with a mild climate should not be stratified.
Also, annuals, the seeds of which ripen at the beginning of summer and end up in the soil again, germinate by autumn and produce a new generation of plants.
The seeds of most vegetable crops are capable of sprouting without stratification - for them, a period of rest spent at normal temperatures is quite sufficient.
By the way, the seeds of some plants, for example, cedar, can remain in the soil for several years - such grains have a strong shell, which needs a lot of time to become softer.
