I would think that rather than offer bonus plants, which I can see takes enormous growing/storage space and costs shipping, that they could implement a points/rewards program for discounted plants. For example if a person ordered $50 of plants, they may get 1/2 price shipping, or if they order $100 plants they get 10% off. Or maybe if they order 2 yrs in a row, they get a discount. That way the customer is given a good deal, and the nursery doesn't have to care for/maintain so many extra plants. There are some people that really do not like bonus plants, I know I sometimes get something I already have or something I don't have a spot for.