As the month of October nears, the height can gradually be reduced to the overwintering heights. If the grass ceases growth before all deciduous foliage has fallen, use the mower as a leaf mulcher or vacuum to keep the leaves from packing down and smothering the grass. Have the mower serviced and stored for winter to maximize efficiency and longevity of the machine. 6 Drain garden pools to avoid freeze damage. Roots and rhizomes of most kinds can be overwintered at about 50 degrees F. in a basement in moist sand that is not permitted to dry out.
Many gardeners find it easier to purchase fresh propagules every spring.
7 Take preliminary steps to protect roses. Final winterizing is usually done in late October after a deep freeze, but tying the canes loosely beforehand will ease the job. For the final winterizing, cut the canes back to about 6 to 12 inches and mound the plants with fresh topsoil purchased earlier. Cover with cones or bushel baskets for complete protection. Many gardeners successfully overwinter their roses and other tender perennials by covering with bags of leaves collected in the autumn.