Reed head exposed soil problem

Reed head exposed soil problem

1. I think that in terms of season, winter, late autumn and early spring can be deeper, and late spring and summer can be shallow.

2. The granular material can be a little deeper, while the humus soil should be shallow. Cymbidium should be deep and spring orchid should be shallow. Deep seedlings are strong, shallow seedlings are many. Because of the time, measures should be taken in accordance with local conditions.