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Castle Wall® Blue Holly Ilex x meserveae

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Exposure
  • Part Sun to Sun
  • Sun

The optimum amount of sun or shade each plant needs to thrive: Full Sun (6+ hours), Part Sun (4-6 hours), Full Shade (up to 4 hours).

Flower Season
  • Spring
  • Summer
  • Fall
  • Winter
Mature Size
96" 48"
Height
60 - 96"
Spread
36 - 48"

This plant is hardy in zones 5 - 7

Hardy Zones

Zones are based on the lowest average temperature an area is expected to receive during the winter. They are used to determine whether a plant is likely to be perennial in your area. If your zone is equal to or higher than the zone listed for the plant, it will be hardy for you and thrive in your climate.

  • 5
  • 6
  • 7
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  • Details

    Features

    Handsome columnar holly.

    Castle Wall® holly is a regal accent for your landscape! Dark glossy leaves, superior vigor and branching make it a superior choice over other varieties. Narrow habit makes it ideal for hedges, foundation plantings, or even as a dramatic specimen. Castle Wall® holly is a male variety that will pollinate Castle Spire® and Castle Keep® holly, but it does not produce fruit itself.

    Fall Interest
    Winter Interest
    Deadheading Not Necessary

    Characteristics

    Plant Type: 
    Shrub
    Shrub Type: 
    Evergreen
    Height Category: 
    Tall
    Garden Height: 
    60 - 96 Inches
    Spacing: 
    48 - 60 Inches
    Spread: 
    36 - 48 Inches
    Flower Colors: 
    White
    Flower Shade: 
    White
    Foliage Colors: 
    Green
    Foliage Shade: 
    Dark Green
    Habit: 
    Upright
    Container Role: 
    Thriller

    Plant Needs

    Light Requirement: 
    Part Sun to Sun
    Light Requirement: 
    Sun
    Maintenance Category: 
    Easy
    Blooms On: 
    Old Wood
    Bloom Time: 
    Early Spring
    Bloom Time: 
    Mid Spring
    Bloom Time: 
    Late Spring
    Hardiness Zones: 
    5a, 5b, 6a, 6b, 7a, 7b
    Water Category: 
    Average
    Uses: 
    Landscape
    Uses: 
    Specimen or Focal Point
    Uses Notes: 

    Broad columnar shrub that is great as a foundation, specimen or hedge plant. Good in groupings and mass plantings. Makes a good screen. Good for winter gardens.

    Maintenance Notes: 

    Castle Wall® holly is a male variety that does not get fruit but will serve to pollinate female varieties, like Castle Spire® and Pharos Gold holly. One male will pollinate up to 5 females. Plant within 50'/15.25m of each other to ensure pollination.

    Male holly like Castle Wall may be pruned after flowering if desired, but its natural columnar habit should need little trimming.

    Holly prefers acidic soils with average moisture and appreciates a good layer of mulch. If desired, apply a granular fertilizer formulated for trees and shrubs in early spring.

    Castle Wall® Ilex x meserveae 'Heckenstar' USPP 14,308
  • 1 Recipe

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