Ask for advice: how to use the sloping roof to grow flowers and vegetables?

if you go into details, there are a lot of things to pay attention to. First of all, it is whether the roof is your own. If it is not a villa, the roof is a public part, and the residents of the whole building have a share. You'd better consult the property before planting vegetables, otherwise it may be more troublesome in the future. Then, how to plant vegetables on the roof, what equipment to use, or what vegetable pots to use, or find someone to build them with waterproof cement. The planting box I use. It's not easy to take care of it, so it's strongly recommended to find someone to make a waterproof cement base. Unless it's your own home downstairs, otherwise it's sure to come downstairs after a long time, and it's more troublesome then. Nutritious soil or coconut bricks are generally recommended for the soil used on the roof, which is lighter and won't cause pressure on the load-bearing of the roof. Of course, the pure soil used for the roof design now is also ok. Nutritive soil can be bought at the local flower and bird market, so the seed tools are relatively simple.