Another one of the blogs I subscribe to to get financial tips is called Get Rich Slowly. They talk about things like savings and investment, but the writer and his wife are also doing a project where they figure out how much time and money they are saving (or losing) by growing their own food in the garden.
I love gardening for various reasons, so this is definitely interesting to me. Click the link for their october update:
The GRS Garden Project: October Update ? Get Rich Slowly