I hadn't noticed that, but I think the caged plant (fern, maybe) looks really cool and I'll hope it will be in the game. I read somewhere that the plant section in Buy Mode was pretty poor, but the plants available in Build Mode, were amazing and really diverse!!! I'm really happy about that, because I love to decorate my garden with lots of flowers, shurbs and trees!!!! I'm also glad that there will apparentlly be much more harvestables in TS3 than there were in TS2!!!
