B. microphylla var. koreana X B. sempervirens 'Green Mountain'
is an more upright form of boxwood with small dark green leaves. It's an
excellent shrub for hedging. Seems to hold good green color much better
than most boxwoods through the winter months. Requires cool, moist soil
conditions. Decent growth rate when compared to typical boxwood varieties, and will make an excellent, low maintenance medium height hedge within a few years.
Green Mountain Boxwood is probably better suited for hedges that require slightly more height than width, and in situations where attaining height is a higher priority. It is probably NOT the preferred boxwood variety, however, for low growing, extremely formal, or "knot" type hedges due to it's more upright growth habit.......unless you just enjoy the extra trimming that would be required to keep Green Mountain at heights of 2 - 3 feet or below, lol. For lower growing boxwood hedge projects ( 3 feet in height, or less ), we suggest looking at some of our other boxwood selections.
Plant Facts & Specifications--Mature Height :
5 - 6 ft
--Mature Width :
2 1/2 - 3 ft.
--Growth Rate :
Moderate ( 6" - 8" avg per yr )
--Hardiness Zones :
4 - 9 ( if unsure of your zone, please use zone finder below)
--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 - very
typical of most B. microphylla varieties - small, oval shaped. Good
dark green mature foliage - newer foliage growth slightly brighter
green. Good density. Holds nice green color throughout the winter in most colder climates.
--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 :
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 24" 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 a good grade granular ( preferably organic ) fertilizer / plant food for use with all of our plant species. We personally use, and recommend the Espoma line of organic plant foods, as they are super effective yet gentle enough to use on even the most delicate of evergreen species where fertilizer burn would normally be a major concern. However, a water soluble type plant food (Miracle Gro, or equivalent ) are also acceptable options. Other granular fertilizers with a 6 - 12 - 12, or 10 - 10 - 10 ratio can also be used - but we suggest using them at 1/2 - 3/4 strength to avoid any chemical burn issues to the root system of the plants. Best to fertilize in early spring, and again in mid fall - avoid feeding standard chemical fertilizers during hot summer months, and directly after transplanting. The Espoma Organic Plant Foods may be used at anytime.