Do don't believe that everyone sleeps in winter. Earthworms, microorganisms are still active if they have something to do, that is, to eat. And if the cold does not paralyze them. Let's think about fall fertilization.
organic matter that you are going to bring to the plants will slowly transform to release the nutrients the plants will need from spring . But can we bring in any organic material? A brief overview.
The guano and blood desiccated are "boost" fertilizers for use in the spring.
Reminder for math strong:10 m² it is:
mix of potting soil and compost in vegetable garden