Wallie's Gardens carries all your ""must have"" plants for your flower garden, container gardens and vegatable garden. If you are seasoned gardener - this is the place for you! They carry more unusal plants than any other garden center I've been to (and I've been to them all!). Prices are very reasonable and they carry very budget friendly small container perenials too!
Pros: Prices, Selection and easy to find
Cons: None that I can think of.