Greenhouse belongs to protective agricultural land. If flowers are planted, it is not an illegal building, but the management room has a limited area.

And as long as it is contracted by itself, it has the right to decide its own mode of production and operation. Building a greenhouse on the land contracted by oneself is a legal use of the land, and the ownership of the greenhouse facilities built also belongs to the contractor.

China's rural land contract law stipulates that the contractor shall enjoy the following rights:

(a) enjoy the right to use and benefit from the contracted land according to law, and have the right to independently organize the production, management and disposal of products;

(2) Exchanging and transferring the contracted management right of land according to law;

(three) the transfer of land management rights according to law;

(4) If the contracted land is expropriated, requisitioned or occupied according to law, it shall have the right to obtain corresponding compensation according to law;

(5) Other rights stipulated by laws and administrative regulations.