Buxus microphylla var. koreana
Korean Boxwood is a very hardy boxwood with excellent cold hardiness - makes a great choice for northern gardens. Has been noted to survive temperatures as low as -20F, and can be used in zone 4 locations, where most Boxwoods would fail. Leaves are much more elongated, and elliptic in shape than most other Boxwood cultivars that are commonly seen. Can also withstand the heat & humidity of the southeast - just a good hardy plant!!
Foliage will bronze slightly in extremely cold areas - the more exposure & less shelter that is provided, the more intense the winter bronzing will be displayed. Makes a great hedge, foundation planting - can be sheared / trimmed to be maintained at a wide variety of heights & widths.
Plant Facts & Specifications
Mature Height: 3 - 4 ft
Mature Width: 4-5 ft
Growth rate: Moderate ( 4"-6" avg per yr )
Sun Exposure: Full to partial sun - will even do very well in partial shade areas.
Soil Preference: Average. Slightly cool & moist - fertile. Mulching recommended.
Foliage Color & Texture:
Evergreen broadleaf - extremely
bright, vibrant green. Leaves are more elongated, very elliptic &
oblong when compared to most other Boxwood cultivars. Foliage density
can be greatly enhanced through regular shearing / trimming if desired.
Flower, Cone, Or Berry Facts: Flowers - very
small, rather inconspicuous, creamy yellow flowers develop in small clusters in April - May,
and are actually quite fragrant for the brief time that they are
present. Will attract bees while in bloom.
Diseases / Insects: Among
the more prevalent problems one might be confronted with when growing
Boxwood would be: Canker, root rot, boxwood leaf miner, boxwood
webworm, nematodes, and boxwood mites. Most all of these pests /
problems are much more commonly seen on Buxus sempervirens cultivars -
other variations / hybrids seem to show much more resistance to these
problems. Root rot ( Phytopthora ) can be a problem in inadequately
drained soils, and is usually indicated by a lighter "off color" to the
foliage. Annual treatment / inspection is strongly recommended during
the early growing season in order to monitor any possible problems, and
as a preventative action.
Recommended Spacing: A spacing of about 2 ft apart is recommended for most typical hedge applications.
Deer Resistance Rating: Lowest Resistance [ 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 ] Highest Resistance
Fertilization / Feeding: For maximum health & hardiness, we highly recommend POOPeas
for use with all of evergreen species.
However, either water soluble ( Miracle Gro, or equivalent ), or
granular fertilizers ( Holly Tone is excellent ) are also good options. Most any granular fertilizers with a 6-12-12, or
10-10-10 ratio are also acceptable. Best to fertilize in early spring,
and again in mid fall - avoid feeding standard chemical fertilizers
during hot summer months, and directly after transplanting. POOPeas may be used at anytime.Additional Features & Characteristics:
Occasional Trimming Recommended: As with most all Boxwood varieties, we suggest a light trimming / shaping be performed 1-2 times per year to enhance foliage density & maintain overall desired shape.