I am looking for a simple computer landscaping program that would allow me

(1) to enter my own information

(2) to map a flower bed using: spread and height, colour and flowering time

I do not need or want a fancy data base. The idea is to have a data base/ inventory which I can easily update and to "move" plants on the computer without having to redo a hand drawn sketch from scratch over and over again.

I am in the process of developing a few sample beds for field grown perennials and it would be nice to get a few things right the first time around rather than moving plants several times.