Soil test kits are available at most nursery and garden centers or you can have your local extension service test for you. Water deeply immediately after fertilizing your clematis. Too, your soil may be way out of range and a soil test will indicate such. If you are an inland gardener, increase this amount to 2 inches of water when the weather is dry and hot. Clematis (Clematis spp. Clematis vines can break very easily. If blooms fade before midsummer, resume fertilization. Is miracle gro a good fertilizer for … Use approximately 1 ounce of bonemeal per square foot of area around the vine. Clematis 'Jackmanii' is how this plant is referred to in plant taxonomy. Each spring add a 1- to 2-inch layer of compost around the base of the vines and a balanced organic fertilizer with a 3-1-2 ratio of nitrogen, phosphorous and potassium. Amend the soil at planting with compost. Gardenality.com was designed and developed by web development firm, Dot Designers. In following years, provide at least 1 to 2 inches of water per week in the absence of sufficient rainfall. Keep in mind that clematis is a heavy feeder. If blooms fade before midsummer, resume fertilization. Water your clematis once per week with 1 inch of water during the growing season. In addition to her work as a writer, she is an accomplished painter and experienced art teacher. Leslie Rose has been a freelance writer publishing with Demand Studios since 2008. © Copyright 2020 Hearst Communications, Inc. Older clematis will have more extensive root systems that reach further out from the base of the vine. Regular fertilization at the right times will encourage strong growth of these leafy vines. Continue this alternate feeding until the end of the growing season. You'll want to supply a low nitrogen fertilizer such as 5-10-10 in spring, when the buds are about 2 inches long. Most clematis are vigorous, climbing vines.Sometimes referred to as ‘heavy feeders”, most nutrition is provided by the soil that you plant your clematis in. Miracle-Gro Garden Feeder –Miracle-Gro Fertilizer For Clematis. Fertilization will encourage root growth during the period when your clematis vine is becoming established. Keep fertilizer at least 4 inches away from the base of the stem. As with other climbing plants, the growing end of the vine is on a mission, always searching for something new to grab onto. When a vine can’t find anything to grab, the end stops growing and will die back. Clematis (Clematis spp. Mulch must not be allowed to touch the base of the plant, so keep it at least 4 inches away from the trunk. Older clematis will have more extensive root systems that reach further out from the base of the vine. Never use any information from Gardenality to diagnose or treat any medical problem. Use approximately 1 ounce of bonemeal per square foot of area around the vine. Spread a 2-inch layer of organic mulch around the base of the plant to conserve moisture and to prevent weeds from growing. Because most varieties of Clematis thrive in a wide range of soil pH (6.0-8.0), there's usually not a need to perform a soil test before planting or fertilizing them; however, it may be a good idea to research the various varieties of Clematis you have growing in your garden to see if there are any specific nutritional needs for specific types of perennial plants. Fertilize your established clematis once per month throughout the growing season, starting in early to mid-spring and continuing into midsummer. Discontinue fertilization if blooms appear, because applications of fertilizer during bloom can shorten the length of bloom time for the clematis. Growing requirements for Clematis Vines Clematis Jackmanii, like any other plant, will thrive if you are able to meet its growing requirements, and give it reasonable care.