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In many gardens, no deadheading guidelines apply in the autumn.

Taller varieties of Sedum such as Autumn Joy should be cut back to prevent spindly branches and to promote compact growth.

These include Achillea (Yarrow), Astilbe (False Spirea), Campanula (Bellflower), Centranthus (Jupiter's Beard), Coreopsis (Tickseed), Delphinium (Larkspur), Gaillardia (Blanket Flower), Geranium (Cranesbill), Monarda (Bee Balm), Oenothera (Evening Primrose), and Phlox paniculata (Garden Phlox). However, some perennials benefit from being deadheaded. Some perennials that should not be deadheaded so that they reseed for the following year are Alcea (Hollyhock), Digitalis (Foxglove), Lobelia (Cardinal Flower), and Myosotis (Forget-me-not). An advantage to this is that baby plants can help fill in areas of your garden or allow the gardener to share plants with other gardeners. For example, columbine loves to spread and roam its seedlings to places away from the parent plant. There are some perennials that are great self-seeders. Gardeners should evaluate the needs of their plants in order to make a proper determination. Making a decision about deadheading can be difficult because it is advantageous for some plants and detrimental for others. Deadheading plants as soon as the blooms begin to fade will promote a second bloom. The flowering process is suspended, and the plant begins to use all its energy to form seeds. It can also be meditative and therapeutic.Īfter a plant is finished flowering, it begins to form seeds. Many gardeners find deadheading enjoyable and relaxing. Deadheading allows you to stay in contact with your garden beds. Deadheading is a maintenance practice that can be done throughout the growing season. Spending a short time in the garden each day will make the deadheading task much easier. Get in the habit of evaluating your garden frequently to determine if there are any deadheading needs. The deadheading process redirects plants energy from seed production to root and vegetative growth. When dead blooms are left clinging to flowering plants, they sap the nutrition and strength from the core of the plants and rob them of the energy to produce new and colorful blooms. Deadheading is an important task to keep up with in the garden throughout the growing season because it results in healthier plants and continual blooms. Snapping or cutting dead flower heads can enhance the flowering performance of many plants. Most flowers lose their attraction as they fade. Weather also greatly affects a flower's longevity as torrential rains and unseasonably hot weather can take their toll on blooms. This can range from a day to several weeks, depending on the species. The frequency of deadheading a particular plant depends on the life span of its blooms. The best time to deadhead a flower is when its appearance begins to decline. Always check plants carefully to be sure that no flower buds are hiding amid the faded blooms before you shear off the top of the plant. As blooms fade, pinch or cut off the flower stems below the spent flowers and just above the first set of full, healthy leaves. Deadheading is a process of pruning by which old growth and seed heads are removed from the plant to promote new growth and re-flowering.