Monrovia® Castle Wall Blue Holly is a vigorous evergreen shrub with an upright columnar habit and glossy rich blue-green foliage on dark stems. Best planted in moist, slightly acidic well-drained soils. Hollies are dioecious and need both male and female plants to produce fruit. Castle Wall is a male cultivar best used to pollinate 'Castle Spire' and 'Castle Keep'.
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Type: |
Shrub |
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Origins: |
I. aquifolium x I. rugosa Hybrid |
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Height: |
5' - 8' |
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Spread: |
3’ - 4' |
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Spacing: |
3.5’ |
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USDA Hardiness Zone: |
5 - 7 |
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Culture: |
Full Sun, Part Sun |
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Bloom Color: |
White |
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Season of Interest: |
Year-Round |
MAINTENANCE NEEDS: Low Maintenance. Water regularly. Well-drained soils essential. Potential issues include mites, scale, leaf spot, rot, and mildew. Susceptible to leaf scorch or drop if not protected from afternoon sun in hotter climates.
LANDSCAPE USES: Accents or Group Plantings, Borders, Woodland Gardens, Wildlife Gardens, Hedges, Foundation Plantings, and Containers.
COMPANION PLANTS: Magnolia, Rhododendron, Hydrangea
IMAGE: Photos by Proven Winners, Castle Wall® Blue Holly
*As plants have ranges in appearance they may not appear as the images shown
