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CASTLE ROUGE®

Blue holly

Ilex × meserveae

'HACH1'

PP#25,475

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Close up of the foliage on Castle Rouge blue holly covered in dew drops "} Castle Rouge blue holly in a landscape Castle Rouge Ilex in a landscape Close up of the burgundy new growth of Castle Rouge ilex
  • Red new growth
  • Burgundy winter color
  • Male pollinator
Description

Castle Rouge blue holly (Ilex × meserveae) is the biggest thing to happen to blue holly since Kathleen Meserve made the first crosses of Ilex aquifolium and Ilex rugosa back in the 1950s. All season long, its new growth emerges a glossy red-burgundy color for spectacular effect, and once winter comes, the whole plant turns a deep, dark burgundy. It's a male and will serve to pollinate the rest of the Castle series as well as other blue hollies, but unlike conventional male hollies, this one is handsome enough to give pride of place in the landscape. 

USDA Zone
5 - 7 (-20°F/-28.9°C)
Exposure
Full sun, Part sun
Height
5-8'
Width
4-5'
Finish Time
1 season
Type
Evergreen
Bloom Time
Spring
Flower Color
White
Foliage Color
Green, Red
Liner Sizes
2 1/4", 4", Quick Turn

Soil

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

Pruning

Blooms on old wood. While blue holly is best left unpruned to avoid losing berries, male varieties like this one can be pruned after bloom if desired.

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.