Euonymus japonicus 'Benkomasaki' GREEN ROCKET Japanese spindle
size/type
medium-sized shrub,taller shrub
usual height
1-2m
usual width
0,5-0,8m
leaves
evergreen broadleaf
colour of leaves
location
full sun to shade
soil type
acidic (peaty) to neutral
soil moisture requirements
evenly moist (dislikes drought)
USDA zone (lowest)
7 (down to -23°C)
winter protection
for zone 5+6
for zone 7
categorized
Japanese spindles are evergreen shrubs, or small trees with grafted crowns on short stems. They are very popular in southern countries and where winters are mild. The species has oval to ovate, deep green, glossy leaves that are densely clustered along the stems while cultivars vary with shapes and foliage colour.
Description of the plant:
GREEN ROCKET is a Japanese spindle selection introduced to market around 2000. It exhibits a strictly upright habit with neatly erect branches, densely covered with 3 cm long, oval, deep green, highly glossy, evergreen leaves with gently serrated margin. One would even say that one of its parents must have been another upright growing variety with small foliage Microphyllus, same as which it is little more cold-tolerant. In U.S. National Arboretum bulletin from November 1999 an article about a new Japanese spindle variety was published. Its trade name was Green Spire, and it was originally discovered in Japan during a journey of three botanists John Creech, Fred Meyer, and Sylvester March in 1978. There it was allegedly called Benkomasaki which in the article was spelled as Bekomasaki. Upon return they propagated collected cuttings in the USA and in 1991 re-introduced the plant under a new name Green Spire. However, International Plant Names, the agency for naming new plant varieties, contradicts this and insists that Benkomasaki is a former name of GREEN ROCKET, and Green Spire is a separate though very similar variety which we can only approve of seeing them growing side by side.
Thanks to compact shape and slow growth GREEN ROCKET seldom requires pruning. Though you can cut it to rejuvenate old plants or to keep it shorter, but should you have ambitions for a spherical shrub choose another variety for sure. It serves a handsome evergreen gem of a vertical accent in a mixed border and is certainly a great choice for hedging.
Japanese spindles are quite soil tolerant. They will do well in almost any well-drained soil, preferably moist, but not wet. Acid soil will assure deeper shade of green leaves. Grow them on any location from full sun to deep shade. GREEN SPIRE is about 2-3 °C hardier than the species and withstands approx. -23 °C (USDA zone 6), thou we still recommend finding it a protected location in zone 6, away from cutting winds and frost pockets. Not suitable for outdoor pots.
Last update 14-11-2020
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