Fruit trees are planted in flowerpots on the roof. Flowers and plants are not as exquisite as feng shui, but one thing is. You should prevent water from seeping from under the building. Flood control measures should be taken. So as not to cause unnecessary trouble. About the plants planted: hawthorn and pomegranate are ok, mulberry is not suitable, and the first two are still shallow! Roof greening should not only choose plants with shallow roots, but also choose plants that are drought-resistant, barren-resistant, sun-resistant and wind-resistant. Generally, there are many shrubs and herbs, but few trees. The following plants can be planted on the roof: Pinus thunbergii, Podocarpus macrophylla, Buxus macrophylla, Buxus macrophylla, coral tree, palm, mosquito moth, Yucca, Gardenia, Bamboos, Sophora japonica, Cercis chinensis, Lagerstroemia macrophylla, Begonia, Chimonanthus praecox, Shoutao, Magnolia grandiflora, Magnolia geranium, Rhododendron and Magnolia grandiflora. Because I don't know my geographical location, I need to determine the materials used according to time and region. For the roof, there are also certain requirements for the cultivation medium. General light materials such as peat, coconut bran, perlite, vermiculite, sawdust, earthworm soil, etc. Alternatively, some substrates, such as humus, can also be made by themselves.