Japanese hollies growing in pots appreciate a moist, but well-drained soil. Varieties such as American holly (Ilex opaca: USDA zones 5 to 9) and yaupon holly (Ilex vomitoria USDA zones 7 to 9) are versatile and shade-tolerant. Most holly shrubs and trees prefer a full-sun to light-shade location with moist soil that drains well. As alternatives, you might want to consider two shrubs that provide a similar look to Taxus and Buxus without the deficiencies: plum yew and Japanese holly. Moreover, these two traditional mainstays have increasingly fallen prey to pests: yews to deer, and boxwoods to aphids and fungal blight. And it sports small, white, four-petaled flowers in the late spring that tend to attract bees and other pollinators. The shrub generally features rounded, glossy, dark green leaves that are only a little more than an inch long. Established plants need watering only during dry spells. Water well regularly, in the form of 1” of rainfall or irrigation per week (equivalent to a 5-gallon bucket full), often more frequently in extremely warm areas or if in a pot. Using a twine, wrap the tree from top to bottom to keep the branches tight against the tree. By tying up the branches in the winter, you can prevent frost burn and breakage. Winter Care If you’re keeping your sky pencil holly tree outdoors in the winter, you will need to protect it slightly from the frost. How do I protect my sky pencil holly in the winter? As the roots die off, the holly’s foliage begins to yellow and die as well. These fungal diseases cause the roots to turn brown or black and become mushy. When planted in heavy soils that retain moisture and prevent oxygen penetration, root rots such as Phytophthora, Pythium and Thielaviopsis black rot occur. With that said, soft touch holly offers a more dynamic look. Not only do they grow taller, but they take extremely well to shearing so you can easily sculpt them to how you want them to look. If you want tall and full hedges, you may prefer the look of boxwoods. Plant in the full sun to partial shade in acidic well-drained soil though it tolerates a wide range of soil types, from moist to dry, and actually prefers clay. Sky Pencil Holly is easy to transplant and urban tolerant. How Fast Does The Sky Pencil Holly Grow? This is a fast growing shrub that will grow up to 10 in a year to mature height of 6-8 feet. With pruning, you can maintain them at a height of 6 feet (2 m.) How fast does Ilex Sky Pencil grow? About Sky Pencil Holly Sky Pencil hollies are narrow, columnar shrubs that grow up to 8 feet (2 m.)tall and 2 feet (61 cm.) wide.
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