Ilex Sky Pencil
'Sky Pencil' is an exceedingly narrow, fastigiate form which grows somewhat slowly in a vertical, pencil-like column to 10' tall but only 2-3' wide. A typical 4-6' tall specimen may only be 10-12" wide. 'Sky Pencil' is an introduction of the U.S. National Arboretum in Washington, D.C. Ilex crenata, commonly known as Japanese holly or box-leaved holly, is a dense, multi-branched, evergreen shrub with a rounded form that typically matures to 5-10’ tall and as wide. It is native to forests, thickets and mountain slopes in Japan, Korea, China and eastern Russia (Sakhalin). It is noted for its ovate to elliptic, crenate to serrulate, glossy, spineless, evergreen, deep green leaves (to 1 1/4" long) which are attractive all year, 4 petaled white flowers which bloom in 3-7 flowered cymes in late spring (May-June), and black rounded somewhat inconspicuous fruits (drupes to 1/4” diameter) which mature in fall on pollinated female plants. Genus name comes from the Latin name for holm oak, Quercus ilex, in reference to the foliage similarities (holm oak and many of the shrubs in the genus Ilex have evergreen leaves). Specific epithet is in obvious reference to the crenate margins of this species. Most cultivars of this species are more compact than the species, typically growing to 3-4’ tall.