Applying Crab Grass Preventer, Getting Rid of Moss, Grass Growing Tips

Is it okay to start planting onions? Can crab grass treatment be applied yet? How to get rid of a moss infestation in the yard? Is it time to remove mulch from plants? When is a good time to start raking the lawn? What is thatch and how best to handle it? Tips on getting grass seed to grow. Are there remedies for dog urine spots in the lawn? What is deadheading and why could it help plants? What to do if you think you have a sink hole in your yard? Learn more from horticulturalist Julie Weisenhorn and Lawn and Turf expert Jon Trappe at extension.umn.edu.