Buxus sinica var. insularis WintergreenKorean boxwood
科:黄杨科
Family:Buxaceae
属:黄杨属
common name:Korean boxwood
introduce:Plant Type: Broadleaf evergreen
Family: Buxaceae
Missouri Native: No
Native Range: None
Height: 2 to 4 feet
Spread: 3 to 5 feet
Bloom Time: April
Bloom Color: Greenish yellow
Sun: Full sun to part shade
Water: Medium moisture
Maintenance: Low
General Culture:
Best grown in average, medium wet, well-drained soil in full sun to part shade. Prefers moist, sandy loams. Tolerant of pruning and shearing. In USDA Zones 4 through 6, this boxwood is best sited in a sheltered location which protects it from winter winds. Avoid cultivating around plants because they have shallow roots. Roots appreciate a good mulch.
Noteworthy Characteristics:
This Korean boxwood cultivar is a dense, compact, many-branched, broad, mounded evergreen shrub which usually has a loose and open habit. Slow annual growth (to 2" in height per year), however height may obviously be controlled by pruning. Typically grown as a 2-4 tall (infrequently larger) shrub with a somewhat larger spread. An extremely hardy plant that is a good choice for northern climates. Apetulous, greenish yellow flowers (separate male and female flowers on the same plant) appear in early spring. Flowers are insignificant but quite fragrant. Small, obovate, medium green leaves (to 5/8" long). Although the foliage of Buxus sinica var. insularis (Q130) tends to bronze (turn unattractive brownish yellow) in severe St. Louis winters, the foliage of Wintergreen, as the name suggests, is less likely to do so. Formerly known as and sometimes still sold as Buxus microphylla var. koreana Wintergreen.
A slow grower that requires little special care other than annual pruning. Some susceptibility to blight and leaf spot. Root rot can also be a problem in poorly drained soils. Wintergreen shows good resistance to the three main insect pests of boxwoods (boxwood leaf miner, boxwood mite and psyllids).
Uses:
Hedge or foundation plant. Mass, specimen or accent. Formal gardens or shrub borders. Bonsai plant.
