Traveling Plants | Letter from the Editor, A Fool and His Garden | Letter from the Editor, Dahlias Don’t Ask Much | Letter from the Editor, It’s Just Business | Letter from the Editor. Synonyms for the species name are Spiraea bumalda Burv. Its many named cultivars offer a range of sizes, and foliage colors may be green, gold or multi-hued red, yellow and orange. A good trim helps get rid of dead branches and leaves and allows more sunlight in to the new growth that is struggling at the bottom or interior of the shrub. Uses. From midsummer clusters of dark pink flowers appear, contrasting the glowing foliage. Spiraea billardi should receive a hard pruning regime in early spring. Spiraea japonica 'Anthony Waterer' (Japanese Spirea) is a compact, broadly mounded, deciduous shrub with delicate, willowy, reddish-purple leaves in spring, maturing to blue-green as summer progresses. Tolerates partial shade and a wide range of conditions. Dividing Spirea Shrubs Consider dividing your spirea. Spring flowering varieties bloom on old growth from the previous year and need to be pruned right after flowering. This is one of the few plants that combine a lot of positive qualities: excellent appearance, long flowering period, ease and undemanding care. For a summer-blooming variety, this will be in mid-summer. The shrubs will grow back and quickly develop into attractive plants. Leaves (to 3” long) are oval and sharply-toothed. Advertisement. For a spring-blooming cultivar, a good time will be in late spring. To get more flowers later into summer, snip off the spent heads as they fade. The best way to renew or rejuvenate straggly Japanese spireas is to prune them back to within 3 to 4 inches of the ground in late winter/early spring (March or early April in Iowa). tall. Cultivation. Find help & information on Spiraea japonica Japanese spiraea from the RHS When growing shrubs, it is desirable to prune, which rejuvenates the plant, stimulates abundant flowering and allows you to create a beautiful shape. Spirea White – Pruning, Winter Care and Fertilizing Spirea White, includes Bridal Wreath, Snow White, Snowmound, Fairy Queen and Thor Birchleaf. Pruning Japanese Spirea. The Japanese genus of spirea belongs to the Pink family and consists of more than 100 species of various shapes and colors. How to Prune Spirea Bushes Slender branches spread across the ground. Keep in mind that you won’t (probably can’t!) Description. In spring-blooming spireas, cut the whole bush back to ground level in late winter. The mother Japanese species looks a lot like the very common 'Anthony Waterer' cultivar with pink flowers. Save Beloved by greenhorn and green thumb gardeners alike, their multi-season beauty, easy care, and fast growth make it one of the most popular of flowering shrubs. ProblemsDieback, fireblight, powdery mildew, and Cylindrocladium leaf spot can affect it. Disease, pests, and problems. Sign up for a free trial and get access to ALL our regional content, plus the rest Tiny pink flowers in flat-topped clusters (corymbs) cover the foliage from late spring to mid-summer, with sparse and intermittent repeat bloom sometimes occurring. Summer-blooming spireas generally respond well to severe rejuvenation pruning in spring when the buds are swelling. The foliage emerges bronze-red in spring, maturing to bright yellow and then green. Late Winter Hard Pruning. Removing dead blossoms and branches may trigger a second blooming and new foliage. alpina Maxim. © 2020 The Taunton Press, Inc. All rights reserved. Leaves (to 3” long) are oval and sharply-toothed. Slender branches spread across the ground. Spiraea japonica 'Goldflame' (Japanese spirea 'Goldflame' ) will reach a height of 0.75m and a spread of 0.75m after 5-10 years. For best performance, Japanese spireas should be rejuvenated every 2 to 3 years. Banks and Slopes, Cottage/Informal, Beds and borders, Low Maintenance. Grow Spirea japonica ‘Goldflame’ in moist but well-drained soil in sun to partial shade. You may also be interested in knowing about pruning: Camellias; Japanese maple tree; Rosemary; Sage; 4. Pests that are occasionally found on ‘Magic Carpet’ Spirea are Japanese Beetle, aphids and powdery mildew in extremely wet conditions. kill a spirea by pruning it. The same applies to the others in this group of late flowering Spiraeas - Spiraea x douglasii and Spiraea canescens. The flowers of this type of culture are formed on the shoots of the current year, so pruning is carried out in early spring, before the growth begins. Other common names Japanese spirea 'Firelight' . In late spring to early summer, flat sprays of rose-pink flowers are on display. 2150 Beardshear Hall And because they’re fast growers, a liberal pruning has negligible impact to flowering – if done at the right time. If you have a spirea in your garden there is no doubt that you like it to flourish in the best way possible. Not Japanese White, see pink spirea. To maintain the attractive shape of ‘Magic Carpet’ Spirea, you will have to prune it regularly. Woody shrubs give wonderful structure to gardens and landscapes. The best time to prune spirea is after the first flowering. And ones that add pretty flowers, luminous foliage, and multi-season color give even greater value – like spirea. This pruning will usually be a more drastic trim and you will remove more plant material from the plant than during the spring/summer prune previously discussed. During the spirea trim, cut the back the tips of the stems to the top of the leaf bud. Spiraea japonica, commonly called Japanese spirea, is a dense, upright, mounded, deciduous shrub that typically grows 4-6’ tall with a slightly larger spread. You may also be interested in knowing about pruning: Camellias; Japanese maple tree; Rosemary; Sage; 4. In late June, this plant bears clusters of pink flowers; bloom continues into September if deadheaded. Banks and Slopes, Cottage/Informal, Beds and borders, Low Maintenance. Japanese spireas (Spiraea japonica) are small shrubs that grow 2 to 3 feet tall. Grow in most moist soils, preferably in full sun. Spiraea japonica, the Japanese meadowsweet, Japanese spiraea, or Korean spiraea, is a plant in the family Rosaceae. Soil type The japonica species of Spirea is a mid-size shrub with airy pink to white blooms and green foliage. (800) 262-3804, Iowa State University | PoliciesState & National Extension Partners, Like us at Plant and Insect Diagnostic Clinic, Like us at Department of Plant Pathology and Microbiology. 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