Returning from a trip in Iceland, gardening writer Jeff Lowenfels reflects on an asset that sets the state apart from others.

The big question is when to dig your dahlia tubers. The answer is after a good frost. The plants should be left in the ground ...

Trees blazing with color are responding to fewer hours of sunlight. Sensing that the days are getting too short for their leaves to efficiently (and magically) change sunlight into tree-feeding sugars ...