Hypericum citrinum – As its name shows, its flowers are a luminous ornamental lemon-like color.. Hypericum inodorum – This very hardy and resilient Saint John’s wort will also bear innumerable flowers. “St John’s Wort” is often used to refer to any species of the genus hypericum, while the more specific Hypericum perforatum is called “common St John’s Wort”, or “perforate St John’s wort” to differentiate it. Hypericum Growing and Care Guide. A popular cultivar, Hypericum frondosum 'Sunburst' (St. John's Wort) is a tight, dense, upright, mounded shrub with large, golden-yellow flowers, 2 in. This shrubby, round shrub has stiff, upright branching, blue-green narrow foliage that turns reddish purple in the fall. Hypericum frondosum 'Sunburst' Sku #4213 Dense, blue-tinged, green foliage on a compact, upright shrub that is excellent as a foundation plant, in mass plantings, and informal hedges. Prune as needed to shape after flowering. Growing Tips Naturally grows with a neat, rounded habit, so needs little pruning. Sunburst St. John's Wort is a multi-stemmed deciduous shrub with an upright spreading habit of growth. Variety or Cultivar 'Sunburst' _ 'Sunburst' is a mound-forming, evergreen or deciduous shrub with oblong to lance-shaped, blue-green leaves and, in summer, bright yellow flowers with prominent, dense stamens followed by ovoid, reddish-brown fruit. Hypericum andosaemum – This is the ideal specimen to set up low-lying evergreen hedges.This variety never grows any taller than 32 inches (80 cm) and bears cute little yellow flowers. St. John's wort or Hypericum is a flowering plant, used medicinally to treat a variety of ailments. Common Names: St John’s Wort (Hypericum perforatum), Tutsan, Aaron’s Beard, Rose of Sharon. Each cup-shaped flower presents 5 petals surrounding a prominent tuft of golden stamens. How to prune hypericum. Height: 3 to 72 inches (8 to 180 cm); shrubs and small trees may reach heights of 470 inches (1200 cm). Hypericum is a large group of plants that includes everything from annuals and perennials to shrubs, trees and those suitable for ground cover. They are followed by reddish-brown fruits that ripen in fall and persist well into winter. Hypericum is a stunning plant in flower. Life Cycle: Hardy perennial.Hardy Annual. Pruning Prune to shape in spring if desired or required. Hypericum Hypericum. Habit. across (5 cm), from early to mid-summer. Hypericum frondosum 'Sunburst' is: Semi evergreen. The exfoliating bark and persistent seed … Growing Region: Zones 5 to 9.UK Hardiness: H5 to H6 Sunny Boulevard ® Hypericum x 'Deppe' USPP 20,045 , Can 3,587 Professional Growing Information Hypericum Growing and Maintenance Tips 'Sunburst' tolerates full sun to partial shade, and a wide range of soils. Golden St. John's Wort puts on an explosive display of bright yellow flowers in mid-summer that lasts for 3 to 4 weeks. Hypericum frondosum 'Sunburst' Characteristics Uses Specimen; hedge; edging; foundation plantings; mixed borders. Its average texture blends into the landscape, but can be balanced by one or two finer or coarser trees or shrubs for an effective composition. It is also a very prolific ground cover plant but you need to keep it under control or it will cover your entire garden if you’re not careful. Hypericum frondosum ‘Sunburst’ hy-PARE-ih-kum fron-DOE-sum Audio This is a small, upright, mounded, deciduous shrub with attractive, flaking reddish-brown bark on mature stems and striking, linear to oblong blue green leaves. Native: Worldwide apart from Antarctica.