Wall O Water
So what are people's opinions on those wall o'waters? They are plastic cylindrical tubes that you fill a little over halfway with water. You place them around your plants and supposedly you can put them out up to a month earlier (i.e. start tomatoes outside in April) and up to a month later in the fall.
I have just ordered some and am going to try them out (not that it makes much difference now in Chicago, but I can use them more in the fall).
Do they work? Do you love them? What is your opinion on these devices?