Growing Comfrey Plants In Your Garden
Comfrey plants are perennial herbs with turnip-like roots, and hairy, broad leaves. The plant bears bell-shaped flowers, from white to pink or purple in color. It is commonly used for medicinal purposes, but is also popular in organic gardening for its use as a fertilizer. Growing comfrey plants requires a climate in hardiness zone USDA 3-9 (although some ornamental varieties are only hardy to zone 5) with rich, moist, alkaline soil (pH of 6.7-7.3). Comfrey plants generally prefer shade to part shade exposures in warm moist soil, although some cultivars require full sunlight to attain highest yields. There are some aggressive species and many self-sow readily. Propagation can be done via seed, division or separation. Sow comfrey seeds in fall or early spring directly in the garden or in a cold frame, and pot seedlings to be over wintered inside. Division of comfrey herb plants may occur at any time; however, spring is suggested.
Divide by cutting off 3 inches of root below the soil level and then plant directly into a pot or another area of the garden. As comfrey can be an aggressive spreader, you may want to plant within a physical barrier and deadhead flowers to rein in its spreading habit. Comfrey plants are easy to grow and require very little maintenance once established. This perennial is generally frost and drought hardy as well as being primarily disease and pest resistant.
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