Zone 4b

Mother's Day is coming up, and for me, besides the obvious, it means here in Metro Denver we can finally plant our little seedlings outdoors.  The USDA revised the Zone Map, and now the Heat Zone Map shows Colorado is a 4,5 & 6 zone. Here in the city we are pretty much a 5.

http://planthardiness.ars.usda.gov/PHZMWeb/#