Watson's has been here for a very long time and is a nice smaller scale garden center (as opposed to Valley View, that is). They have healthy, good quality plants and a nice variety of most stuff. The prices tend to be high but sometimes it's worth it to know you are getting good plants. They have a lot of pots, tools, seeds, fertilizer, hoses, etc., PLUS a lot of decorative garden items. Some of it is pretty kitschy but they have some very tasteful things too. I like their selection of cast concrete ornaments outside.
The employees are very helpful and friendly. I recently went in there for a very arcane tool. They didn't have it in stock but they got one for me within a day. That's service!