Koehne Holly

Koehne Holly (Ilex x koehneana)

Koehne Holly (Ilex x koehneana) is a vigorous, broadleaf evergreen hybrid known for its upright pyramidal form, glossy dark green foliage, and showy red berries. A cross between Ilex aquifolium and Ilex latifolia, this large holly combines the ornamental appeal of English holly with the heat tolerance and adaptability of Asian species, making it a bold focal point for year-round structure and seasonal color.

Distinctive Features

Koehne Holly grows 15 to 25 feet tall and 8 to 12 feet wide, forming a strong, upright framework ideal for screens, specimens, or foundation accents. The foliage is leathery and spined, with a deep green sheen that persists through winter. Female plants produce abundant red berries in fall when a male pollinator is present. Its formal appearance and tough constitution make it suitable for both traditional and contemporary landscapes.

Growing Conditions

• Sun Exposure: Full sun to partial shade
• Soil: Moist, well-drained, slightly acidic soil
• Water: Moderate; water regularly during establishment
• USDA Hardiness Zones: 6�9

Ideal Uses

• Focal Point: Large stature and bold texture make it ideal as a specimen plant
• Privacy Screening: Upright habit and dense foliage offer effective year-round coverage
• Formal Gardens: Structured shape suits symmetrical or classical designs
• Foundation Plantings: Creates a dramatic vertical accent near buildings
• Wildlife Gardens: Berries attract birds and provide seasonal habitat

Low Maintenance Care

• Watering: Maintain consistent moisture, especially during dry spells
• Pruning: Prune in late winter or early spring to maintain shape and size
• Fertilizing: Apply an acid-loving evergreen fertilizer in early spring
• Mulching: Helps retain moisture and suppress weeds
• Pollination: Requires a male pollinator, such as Ilex x koehneana 'Chestnut Hill', for berry production

Why Choose Koehne Holly?

• Bold Evergreen Structure: Makes a strong visual statement in any season
• Showy Red Berries: Adds vibrant winter interest when properly pollinated
• Hybrid Vigor: Tolerant of heat, humidity, and urban conditions
• Versatile Use: Suitable for both formal and naturalistic designs
• Focal Point: A commanding evergreen presence with year-round appeal

Ilex x koehneana combines ornamental beauty with landscape versatility, offering strong evergreen form and seasonal color that enhances both residential and commercial plantings.