Temperatures, leaves, and rain are beginning to fall. My favorite time of the year. Time to fertilize lawns, trees, shrubs and perennials. Fall is also a great time to divide most perennials and replant or give to friends and relatives. The cool temperatures and shorter days begin to slow down plant processes. However the soil temperature which are still warm create continued root growth and carbohydrate production. This is why fall is for planting and fertilizing.