Glossy Ilex glabra Strongbox® grown in a 3-gallon pot.
Mature, full-size Ilex glabra Strongbox® grown in situ.

Ilex glabra Strongbox® (Dwarf Inkberry) Unity Grown

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Ilex glabra Strongbox® is a recent dwarf cultivar of inkberry holly produced by Proven Winners. Low growing, evergreen, and more resembling a boxwood than an inkberry, Strongbox® is an excellent native alternative to non-native boxwoods, with a great deal more aesthetic and ecological appeal. Dense, ball-shaped, and growing to a mature size of only two to three feet tall and wide, Strongbox® inkberry has small, glossy, dark green leaves that are tinged with red in early spring, before maturing to full, dark green for the summer and fall. 

Strongbox® grows best in full to part-sun conditions and medium to wet, well drained soils with some acidity. Perfect for low hedges and container plantings, Strongbox® holly has all the appeal of boxwood with the added benefit of small white flowers in the spring that attract important pollinators; Strongbox® inkberry is an all-male cultivar and serves as one of the pollinating partners necessary for the production of attractive black berries in the Gem Box® cultivar.

Native to Eastern Shore, Native to Maryland, and Native to U.S.
Mature Plant Height: Short: 12-29" and Medium: 30-48"
Sun (6+ hours) and Part Shade/Sun (4-6 hours of sun)
Soil Moisture: Medium to Wet and Well-drained
Soil Type: Acidic and Average
Bloom Time: Spring
Flower Color:
Foliage color: Green
Features: Attracts Pollinators, Attracts Birds, Berries, Fall Color, and Winter Interest
Tolerances: Clay Soil Tolerant, Deer Tolerant, Rabbit Tolerant, Wet Soil Tolerant, and Salt Tolerant
Garden Type: Small Space, Container, Foundation Planting, and Border/Screen

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