Because the area of the top floor is not owned by the owner, it is definitely illegal to grow vegetables on the top floor. If this kind of behavior is opposed by other owners, you can first reflect it to the residential property and let the residential property company deal with this problem. If the residential property company doesn't care, you can also complain to the community department where the residential area is located or directly to the local housing management and construction department. Actually, I don't think it's too much to grow vegetables on the top floor As long as it doesn't affect the normal life of other owners, I don't think other owners need to care too much. After all, it is better to deal with neighborhood relations.