Plant world is huge! And it's like a zoo! There are parrots and other birds (a toucan!) everywhere, some huge tortoises, and a few free range cats. Be on the lookout for Cactus Cat...every time I've been there he's been stealthily snoozing in the cacti of all places.
The people that work there are very helpful and nice, the prices are pretty good, and they basically have anything you could want: indoor, outdoor, succulents, cacti, big trees, small shrubs, planters, soil, even Bonsai trees!