I'm torn here. On the one hand, I want to give you bonus points for finding a different way of handling the garden idea, and I even think your molds are fairly interesting looking. On the other, the instructions were quite explicit that one shouldn't have flowers as the main subject.
I may have to come back to this and decide later if I feel this badly violates the topical requirements or if I think this is a clever way around them.
This photo has an interesting look to it because of the teehnique you chose. I also believe that it's probably borderline in this challenge since 'flowers' are not supposed to be the main subject. I think your composition would probably be stronger with '3' subjects rather than 4.