Any one have an idea how to price annuals per sq. ft. of install? Annuals that will be planted in May will be begonias nothing exotic. We are talking about a substantial amount of square feet. Could be 500 Square feet. I am sure that this area is considered small for some of you. But it is the biggest annual display I have ever done. Other pricing ideas are welcome. Is there also a easy way to figure how many flats or plants will be needed?