Holly - Blue

Ilex x meserveae


USPP 14,310

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Pyramidal Castle Spire blue holly covered in a dusting of snow Tall and pyramidal Castle Spire blue holly in evergreen planting Specimen of Castle Spire blue holly planted next to residential porch Close up of Castle Spire blue holly's red fruit and snow covered evergreen foliage Dark leafed Castle Spire blue holly planted in front of yellow variegated tree
  • Evergreen
  • Versatile habit
  • 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. Castle Spire® is a female variety with a strongly narrow, pyramidal habit. Sets abundant fruit when pollinated by Castle Wall® holly.

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 8 - 10'

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.