In an ideal environment, the plant will continue to grow for 75 to 150 years and develop into a massive shrub (sometimes as large as 15 ft. tall and wide or more). koreana and Buxus sempervirens: 'Glencoe' (Chicagoland Green®)- Maintains good color in winter, 2-3 feet tall. insularis (B. microphylla var. This plant … Tiny leaves, low cloud-like effect, great for low hedges & as substitute for English. Buxus “Green Gem” is one of the best varieties. Plants will grow well in a variety of part shade situations, including open sun-dappled conditions or light shade with several hours of morning sun or early afternoon sun. Common or American boxwood (B. sempervirens) is a wide-spreading shrub or small tree with dense, evergreen foliage. ‘Aureo-variegata’ has green leaves variegated with yellow. Thinning can be done anytime when the temperature is above freezing. Schmidt Boxwood is a variety of common boxwood (Buxus sempervirens) that is very cold hardy and is perfectly suited to hedging. Full bodied. Both species grow at a relatively slow rate of less than 12 inches per year. Karen Russ, ©2007 HGIC, Clemson Extension. In Arkansas, we seem to have two flavors of boxwood and the choice of one over the other seems to be linked to geography. The common, or American Buxus has over 400 cultivars with a wide range of size, form and variation in leaf color and shape. Boxwood Diseases Phytophthora (root rot) This is a fungus that’s common when boxwood is grown in heavy, poor draining soil. Hybrids between Buxus microphylla var. Some cultivars can actually grow quite large, so it is important to note the cultivar’s maximum growth if using the plant in smaller locations. Soil should be rich in microbes which will create the natural nutrient cycle slowly providing nitrogen plus the other 16 elements to the plants. The microbes and fungi will also protect the roots. Don’t plant Buxus in a damp location; and choose the most robust and disease resistant varieties available. All recommendations for pesticide use are for South Carolina only and were legal at the time of publication, but the status of registration and use patterns are subject to change by action of state and federal regulatory agencies. This cultivar has very unique characteristics - beautiful bluish green color in … Grows 7”-9” per year. Buxus sempervirens. Plants grow to a height of 10 to 15 feet. ‘Green Velvet’ As the name implies a soft and dark green cultivar. Thinning is the single most important maintenance activity for keeping English boxwood (B. sempervirens ‘Suffruticosa’) healthy. Prefers to be in a shadier site and not in full sun. Boxwoods as landscape plants have long been a favorite of Southern gardeners. Most American boxwood cultivars are cold tolerant, with leaves that are rather long ovals with more pointed tips. Naturally architectural, Buxus sempervirens 'Dee Runk' (Boxwood) is a broadleaf evergreen shrub of elegant columnar habit with a soft and lush foliage of ovate, lustrous leaves. Zone 4-9. Scroll down or click the image above to view details each cultivar. Our favorite boxwood. It is a dense variety with more oval leaves. Boxwoods are susceptible to many insects and diseases including boxwood leaf miner, boxwood psyllid, boxwood mite, foliage and twig blights, and Phytophthora root rot. Buxus microphylla NC State University and N.C. A&T State University work in tandem, along with federal, state and local governments, to form a strategic partnership called N.C. Buxus sempervirens ‘ … This cultivar is not available commercially, but can be found on display at botanical gardens around the world, including in England, Japan, and the United States. English boxwood, Buxus sempervirens ‘Suffruticosa’, is a dwarf boxwood and is technically a form of American boxwood. Andrea Filippone - email@example.com, Low habit with great texture, great for dwarf hedge or knot garden, Small and dense, beautiful specimen plant, good for bonsai, Plant in understory to prevent weak center from being damaged by snow loads, Found by Edgar Anderson on his plant expedition to Macedonia in 1934. Well draining soil is the most important thing for boxwood success. If this document didn’t answer your questions, please contact HGIC at firstname.lastname@example.org or 1-888-656-9988. ‘Jensen’ is a rounded cultivar that closely resembles Buxus sempervirens ‘Suffruticosa’ (English). If not pruned it could grow very tall and open habit. See Boxwood Care section for more details. Buxus sempervirens is typically grown in evenly moist, well-drained loams (e.g., sand-clay mixture) in full sun to part shade. If the fertilizer is over-applied, this will cause the leaves to turn brown and may result in dead branches. Never plant them near downspouts or in any area that stays wet. Plants can grow in close to full shade, but typically are less vigorous and more open with decreased foliage density. Established boxwoods should be watered thoroughly at intervals if rainfall is less than an inch per week. Marjan Kluepfel, Former HGIC Horticulture Information Specialist, Clemson University. The leaves then become smaller and thinner and turn quite bronze in winter. English boxwood, B. sempervirens 'Suffruticosa,' is the most commonly grown cultivar, and it was first cultivated in the early 1700's in the United States. It is one of the most popular cultivars. Thinning will allow the center of the plant to receive sun and air. Buxus sempervirens American Boxwood. The fastest growing. Boxwood hedge on the Clemson University campus. Additional Notes . It is a hardy cultivar. koreana) Justin Brouwers: sun to … First cut large branches on just one side of the plant. Very thick foliage encourages fungal leaf spot diseases and twig blight. There are dozens of cultivars, but many are not cold hardy enough for use in zone 5. the cultivars discussed below have merit for use in zone 5 and 6. If they fall off earlier, this may be a symptom of nitrogen deficiency. B. microphylla var. It has bluish-green new growth in the spring that turns to a deep green by mid to late summer. For low hedges and edges. ‘Argenteo-variegata’ has green leaves variegated with white. Buxus sempervirens ‘Suffruticosa’ is the stately form in the gardens of royalty. The earliest symptom of nitrogen deficiency is yellowing of lower leaves. The most popular of the Buxus varieties. ‘Angustifolia’ has the largest leaves and is treelike in habit. Boxwood leaves will normally stay on the plant for three years. Consider use, height, width, exposure, drainage, and soil conditions. Mulching not only keeps the shallow roots cool, but also conserves water by minimizing evaporation of moisture from the soil. It maintains its green color well in winter, even in colder climates. It is a dense variety with more oval leaves. Very dark green color all year. The second year, the other half of the plant would be pruned in the same manner. Some develop a dense outer shell of foliage with only a few leaves in the center. Amazing plant. There is no regular fertilization schedule for boxwoods. The most important aspect in choosing boxwood cultivars is to select the cultivar that best suits your particular application. This will allow for better long term success of your planting and reduce the amount of care necessary. Buxus x. The most reliable guide to applying fertilizer is by testing the soil. This is best done in early winter. Follow all directions, precautions and restrictions that are listed. Buxus sempervirens 'Variegata' Sku #1388. See attached test results on various Buxus varieties, conducted by the Department of Plant Pathology, North Carolina State University. Boxwoods were planted on historic estates, such as Middleton Place in Charleston, which has grand formal gardens that include American boxwood (Buxus sempervirens). Mulch also reduces weed problems. Vertical accent. Other variegated forms include 'Elegantissima' and … American boxwood and most of its cultivars are tolerant of cold weather. AJF Design - P.O. Buxus sempervirens 'Graham Blandy' Sku #1396. ‘Bullata’ is a low shrub with dark green, blunt leaves. Buxus sempervirens ‘Green Tower’ Emerald green, upright. Buxus sempervirens - glossy, larger, dark green Winter foliage is popular in Southern regions with many cultivars, but usually only cold hardy from zones 6 to 8 Buxus sempervirens 'Vardar Valley' - the standard cold-hardy cultivar for this species, which matures at 3' tall by 5' … When grown in full sun, plant foliage is more likely to scorch, bronze in winter or suffer from mite attacks. The best time to shear the plants is in early June. 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