'Sky Pencil' is an introduction of the U.S. A typical 4-6' tall specimen may only be 10-12" wide. '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. The column is narrowest at the base, slowly tapering out along the plant’s ascent skyward. And there is no trimming / pruning required to keep them within these height & width parameters. When my own shrub reached 6 feet tall, its width was only 12 inches at the widest point. It is naturally a very tall, slender, narrow grower - reaching heights of 8 - 10 feet on average, but with an overall average width of only 2 - 2 1/2 feet. Specific epithet is in obvious reference to the crenate margins of the leaves. Sky Pencil Holly is a relatively slow-growing, columnar shrub that reaches 4-10 feet in height, with width only about 1/3 of that. Finally, when planting the Japanese holly, you should know that it does. It has a fastigate form, meaning narrowing toward the top and having upright, usually clustered, branches that it maintains without pruning. Also, note that the Sky Pencil holly won’t need any fertilizer until the first spring after it’s been planted. Sky Pencil Holly is a handsome evergreen shrub that is smaller that most of the species at 6 to 8 feet high, is densely branched, tight, and has columnar growth. Sky Pencil Holly is a handsome evergreen shrub that is smaller that most of the species at 6 to 8 feet high, is densely branched, tight, and has columnar growth. Genus name comes from the Latin name Quercus ilex for holm oak in reference to the foliage similarities (holm oak and many of the shrubs in the genus Ilex have evergreen leaves). Apply between 4cm (2 in.) to 10cm (4 in.) of organic mulch around the root zone to ensure the soil retains enough moisture needed for the growth of the plant. Specifications Botanical Name: Ilex crenata Common Name: Sky Pencil Holly Flower Color: N/A Height: 6 - 8 Feet Width: 1 - 3 Feet Season of Bloom: N/A. 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. It is native to forests, thickets and mountain slopes in Japan, Korea, China and eastern Russia (Sakhalin). It never grows more than 2 to 3 feet wide, yet it will reach 10 feet tall, which is more than enough to screen. 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. Sky Pencil Holly fits that description perfectly.
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