Sheridan Hybrid Boxwoods
Buxus The Sheridan Hybrids
Description: The boxwoods remain consistently green throughout the year. They can be trained as a hedge, topiary or a specimen that you can rely on to stand up to winter conditions, shrug off deer, and provide decorative greens during the holiday season.
The Sheridan hybrids, selected by the Sheridan Nursery in Canada, are especially admired for their sturdiness in Zone 5, never burning or discoloring. They also remain compact. They are the result of crossing Buxus microphylla var. koreana (known for compact form and hardiness) with B. sempervirens. ‘Green Mountain’ forms an elegant pyramid, 3-4′ wide by 5’+ tall. ‘Green Gem’ is a very slow growing compact form well suited to low hedges. It will slowly reach 2′ tall and 2′ wide. ‘Green Velvet’ is intermediate between the two, topping off at 3’ tall, forming a nice green globe.
Like most boxwood these hybrids are not immune to the boxwood psyllid, a tiny insect that causes cupping in the leaves. The psyllid eggs overwinter under the protection of the bud scales. When they hatch in early spring they feed on the young leaves resulting in the cupped effect. Since the damage is strictly cosmetic, control is unnecessary in most situations. Hardy in Zones 4-8.
- Type/habit: Evergreen shrub
- Key season and features of interest: Winter; compact , green foliage
- Flowering period: March – April
- Evergreen or deciduous: Evergreen
- Native? No
- Pollinator plant: Attracts insect pollinators
- Wildlife benefits: Cover for birds and other wildlife
- Site/Condition tolerance: Cold hardiness; drought
- Sun/Shade preference: Full sun to part shade to full shade
- Soil condition preference: Loamy, loose, well-drained
- Low maintenance; deer resistant; susceptibility to boxwood psyllid, boxwood blight, leaf miner, mites and nematodes varies by species.
Growth Habit: Slow growing and compact; mounded, globe, upright oval or wide pyramidal shape depending on cultivar
Size (mature height and spread): 2-5’ tall by 2-4’ wide depending on cultivar
Hardiness (USDA Zones): 4-8
Nativity: Hybrid origin
Suggested Uses: Hedge, topiary, specimen, rock gardens, foundations
Year of award: 2009