Every in-state dealer or agent selling, importing into the state or storing in this state nursery or florist stock shall, before October 1 of each year and before engaging in the business of soliciting, landscaping, taking orders, selling, storing or delivering any such stock, apply to the department for a nursery or florist dealer’s, landscaper’s or agent’s license. Dealers or agents distributing stock directly or on a consignment basis for more than one store or place of business or sales ground or selling stock from motor vehicles or other vehicles shall secure a license for each place or each vehicle from which the stock is sold. The application for license shall designate each place of business of the person applying. The application shall be accompanied by the prescribed fee for each place or each vehicle from which the stock is sold. Upon proper application and receipt of the proper fee, the department shall issue the license, which shall be valid for one license year. If any licensee is found to have violated any of the provisions of the Plant Protection Act or rules, regulations or orders of the department, the license may be revoked and, in the discretion of the department, the person may be refused a license in the state. Those dealers who sell only vegetable plants that are sold for food production or dealers selling only cactus plants may obtain a special dealer’s license for the prescribed fee. Applicants for the special dealer’s license shall state that they will handle only vegetable plants or cactus plants and that the plants will be from stock certified by an inspector.