OK, my experience with plants is very minimal (first house = first time we've had to think about it ). A couple of months ago, we bought several big pots and planted hibiscus in two of them (see pictures below).
Maybe 2 weeks ago, we started losing leaves from both bushes. Now, one is completely devoid of leaves; the other has about half as many as it should. Something is eating them! I can think of three possibilities:
1. Ants - we had an ant problem (yard and house; since nuked) at about the same time that we noticed the leaves falling off. There were ants on the bushes, but then again there were ants on just about everything. But, why would ants be interested in leaves? This isn't the jungle, and these aren't leaf-cutter ants. They were very interested in our powdered sugar! I did see one ant out there this morning.
2. Chipmunks - these things are everywhere! I've never seen one in the pots, but I must admit I don't quite spend all my time looking out the window. Do these things eat leaves? If these are the culprit, all I have to do is wait, since they insist on drowning themselves in my pool on a disgustingly regular basis.
3. Rabbits - seems most likely (they eat plants, right?), but I've never seen one in/around the pots. They prefer swarming my yard to drink water after the sprinklers go off, and leaving little trails of poop (they do it while running!). But, the damage seems too slow to be rabbits. I would think they could clean the whole bush out in no time, and wouldn't leave partially eaten leaves around.
Here is the one that's eaten bare:
Here's a close-up of the damage on the other plant:
Help please! DW is out of town til Sunday, and I'd love to have the problem fixed by then.