Oh, it took me quite some time to find out how to plant these.
I love it!
Some years ago, I was thinking about a rose-game myself... I experimented with it, as well. I think I might still have some quests and or additional 2D-art... If you are interested and want to expand your game, I can dig these out.
Good choise to name the roses after famous women... I did some research about rose-names back then - and it turned out that most of today's roses have trademarked names, and the companies "owning" these names will be very agressive about them D-:
Please continue making nice algorithmic games like this - you did a great job!