![]() Well to severe pruning throughout the season. Providing any useful service and can be cut back to the ground. Theįoliage provides food for swallowtail caterpillars, whose voracity can leave ![]() Increased in popularity and can be found accenting many local gardens. Robust plant, but cutting back the spent stems seems to improve its hardinessĮven more and enhance its vigor. ![]() Beebalm grows best in USDA zones 4īorers and to keep the foliage from collapsing and causing the crown to rot. Issues this season, leave the seed heads for the birds but prune backĪfter the New Year. When that happens, it’sĮssential to cut them back early, so the winter garden soil is exposed to Resistant varieties of monarda can succumb to mildew. Killing frost and dispose of the trimmed foliage do not compost it. Refuge for iris borers, fungal diseases, and aphids. Of bearded Iris becomes rangy early in the season. If sheared in late summer when their bloom isįinished, the basal growth should remain until spring. How to Prune Mountain Perennial Plantsīlack and unsightly with the first frost and should be cut back in Autumn. Problems with pests and diseases which overwinter in the dead foliage and Viewing it may be easier than reading this column!įlowers on this list are not attractive after a killing freeze. The perennial plants mentioned below need to be pruned sooner rather than later.Ī garden friend just shot a great Youtube video on how and when to prune back perennial flowers. Some perennial plants like the protection their foliage provides for their crowns, like asclepias (butterfly weed), chrysanthemums, and heuchera (coral bells) they all fare best if cleaned up in February and March. The seeds of echinacea and rudbeckia attract and feed the birds, while sedums hold onto snow like frosting on the gardens. While it is tempting to cut back the whole flower garden in the fall, it can be nice to leave some perennials standing throughout the winter months.
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