Just start calling! If they say no, ask why not. Ask if they could recommend to you any other people in the nursery business who might be interested. Offer to d

Just start calling! If they say no, ask why not. Ask if they could recommend to you any other people in the nursery business who might be interested. Offer to do something for someone completely for free if you can use them as a reference (a Mark Cuban recommendation for getting started in sales). Make 20 phone calls, and you will learn a lot about your potential users.