That is the best thing to do if you have any diseases present. I till all mine in with a 3 point tiller and tractor in the fall. Then do it over again in early spring. By planting time is is all broken down to nothing. I heat sterilize all my compost that is used in the greenhouse, mostly to eliminate any weed seed. But if you have disease problem of any kind, I would heat sterilize it before putting it back in the garden.I pulled mine, shook most of the dirt off and burned them.