Thanks LaRee, I'm really starting to love that Bigma lens.
dbh - the Botanic Gardens are well worth a visit but I heard recently that there aren't a lot of flowers in bloom just yet. It might be worth waiting a few weeks. I've been meaning to spend an afternoon there especially for the butterfly house. Other local spots include the trails along the ravines and river in Devon itself ( down by the campground and golf course), and Clifford E Lee Wildlife sanctuary just off Hwy 60. Also I checked out Wagner Natural Area just East of Spruce Grove on Hwy 16x, it has lots of area and great trails through the woods and along the marl bogs. Definitely worth a return trip. For any of these bring lots of bug spray though!
I'd recommend getting a copy of "Nature Walks and Sunday Drives round Edmonton". It's a small softcover book and full of recommended sites that aren't that far away.