Buxus microphylla var. japonica
green oval shaped leaves that are somewhat larger than the
hybrid boxwoods most commonly seen in landscapes. Also a slightly
lighter shade of green than most boxwoods. Makes an excellent medium to
large hedge, and appears to be quite easy to grow. Like all other
boxwoods, prefers cool, moist well drained soils as well as a small
amount of shade to give some protection from scorching summer sun. Good
growth rate, but slightly less cold hardy than some commonly used
Boxwood varieties. Some bronzing / winter discoloration has been
observed in cold, open, or highly exposed planting locations.
Plant Facts & Specifications
--Mature Height: 5 - 6 ft
--Mature Width: 4 - 6 ft.
--Growth Rate: Moderate ( 6" - 10" avg per yr )
--Hardiness Zones: 6 - 9 ( if unsure of your zone, please use zone finder below )
--Sun Exposure: Full sun to partial shade
--Soil Preference: Average. Slightly cool & moist - fertile. Well drained. Mulching recommended.
--Foliage Color & Texture: Foliage
is slightly lighter green then most typical B. microphyllus varieties,
especially the hybrid varieties. Leaf shape slightly more rounded - not
as elongated, or "oval" as most of the boxwood hybrids either.
--Flower, Cone, Or Berry Facts: Very
small, creamy yellow flowers develop in small clusters in April - May,
and are actually quite fragrant for the brief time that they are
--Diseases / Insects: Japanese
Boxwood is much more resistant to most pests / problems that you might
see, or encounter with the more specialized boxwood varieties. 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.
--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.