I didn't see any planters at Hare Square. I went there for a Garden Gnomes Club meeting yesterday and looked around for club activities to do. I couldn't find and frog logs or cultivatable plants. All I could do for Club Points was go fishing. paradiseplanet is right about not being able to plant outside of lots it seems. I tried planting a Christmas Rose on open soil and after my Sim placed it on the ground, I couldn't interact with it at all, even to pick it back up. Maybe it will grow on its own like his Trash Plant, if I'm lucky.