Holly - Blue

Ilex x meserveae


USPP 14,308

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Columnar Castle Wall blue holly in landscape Compact and columnar Castle Wall blue holly in garden Close up of glossy evergreen Castle Wall blue holly foliage
  • Evergreen
  • Award winner
  • Hardy

The Castle™ series brings compact, pyramidal forms to the world of blue holly. Their dark glossy leaves, superior vigor and branching make them an improvement over other older varieties. Narrow form makes them great for hedges, foundation plantings, or even as a dramatic specimen. The lustrous green foliage provides season long interest. Though it is handsome enough to be used on its own, Castle Wall® is a male pollinator for Castle Spire®  and Castle Keep® hollies.

Awards Bronze Medal Royal Boskoop Horticulture Society

USDA Zone 5 - 7 (-20°F/-28.9°C)

icon visually displaying the size and shape of this plant variety

Exposure Full sun, Part sun

Height 5 - 8'

Width 3 - 5'

Finish Time 1 season

Type Evergreen

Bloom Time Spring

Flower Color White

Foliage Color Green

Liner Sizes 2 1/4", 4", Quick Turn

Soil Prefers moist, acidic soils. Shallow root system benefits from mulch.

Pruning Blooms on old wood; however, it's best to avoid pruning female hollies as pruning after bloom removes any developing fruit.

Uses Hedges; screens; specimen; landscaping.

Growing Tips Plant a male pollinator within 50' to ensure pollination; one male will pollinate up to 7 females. To minimize winter damage to the evergreen foliage, provide late-season irrigation if necessary and site so that plant is protected from harsh winds and sun.