Blue Holly (Ilex × meserveae)

Blue Holly is a hybrid evergreen shrub known for its glossy, deep blue-green foliage and bright red berries. It’s a cross between Ilex aquifolium and Ilex rugosa, bred for cold hardiness and ornamental appeal. Female plants produce vibrant berries in fall and winter when a male pollinator is nearby. Its spiny leaves and dense form make it excellent for hedges, foundation plantings, and winter interest.

Category

Sun Needs:

  • Full sun to partial shade
  • Best berry production and foliage color in full sun
  • Tolerates some shade but may reduce flowering and fruiting

Bloom Time:

  • Late spring
  • Small, white flowers
  • Female plants require a nearby male for pollination and berry production
Size:

Height: 6 to 10 feet (varies by cultivar)
Width: 5 to 8 feet

Attributes:
  • Evergreen with glossy, blue-green, spiny leaves
  • Bright red berries on female plants
  • Cold-hardy and deer-resistant
  • Excellent for hedges, screens, and winter gardens
  • Attracts birds and pollinators
Care Tips:
  • Prefers moist, well-drained, slightly acidic soil
  • Water regularly during establishment
  • Mulch to retain moisture and protect roots
  • Prune in late winter or early spring to shape
  • Plant a male cultivar (e.g., ‘Blue Prince’) near female (e.g., ‘Blue Princess’) for berries
Pest Watch:
  • Generally pest- and disease-resistant
  • Monitor for leaf spot, scale, and spider mites

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