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Haas Halo Hydrangea

Hydrangea arborescens 'Haas Halo'

  • Elegant Lace-Cap Flowers with a Luminous White Halo Effect on Every Bloom
  • Cold Hardy: Thrives in Zones 3-9
  • Grows 4-5 ft Tall, 3-5 ft Wide
  • Native, Pollinator-Friendly - Attracts Bees and Butterflies
  • Perfect for Mass Planting in Cutting Gardens
Regular price $8192
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Plant Size

Specifications

Plant specifications
Plant Characteristics Cold hardy, Native, Low Maintenance, Flowering, Attracts pollinators, Heat Tolerant, Container Friendly, Non-invasive
Hardiness Zone 3a to 9b
Sunlight Full sun
Height 4-5 ft
Width 3-5 ft
Watering Needs Moderate
Preferred Soil Clay, Loamy, Peaty, Sandy
Growth Rate Moderate
Growth Habit Compact
Blooms In Summer, Fall
Flower Color White
Foliage Color Green
Native Yes
Suitable Space Outdoors
Plant Name Hydrangea
Botanical Name Hydrangea arborescens 'Haas Halo'
Species arborescens
Cultivar Haas Halo
Class Magnoliopsida, Cornales
Does Not Ship To AK, HI, ID, MT, PR

Frequently Asked Questions

What are the mature size dimensions of Haas Halo Hydrangea?

  • Haas Halo Hydrangea typically reaches 4-5 feet tall and wide at maturity. This compact, upright bushy form makes it perfect for foundation plantings and hedges. Allow adequate spacing of 4-6 feet between plants for proper air circulation and full development.

Is Haas Halo Hydrangea cold hardy in my region?

  • Haas Halo Hydrangea is very cold hardy as a North American native. This resilient shrub tolerates harsh winters well and blooms reliably on new wood each spring. Check your specific zone compatibility when you shop at Nature Hills to ensure success.

How much sun does Haas Halo Hydrangea need to flower?

  • Haas Halo Hydrangea thrives in part sun conditions for optimal flowering. This native hydrangea produces its enormous foot-wide lace-cap blooms best with morning sun and afternoon shade. Plant it where it receives 4-6 hours of sunlight daily for the most abundant white blooms.

When should I prune Haas Halo Hydrangea?

  • Prune Haas Halo Hydrangea in late winter or early spring before new growth begins. Since it blooms on new wood, you can cut it back hard without losing flowers. Remove dead stems and shape as needed in February or March for best results.

Will the flowers change color based on soil pH?

  • No, Haas Halo Hydrangea maintains its pure white lace-cap blooms regardless of soil pH. As a Hydrangea arborescens variety, it differs from the pH-sensitive mophead types that shift between pink and blue. You can enjoy consistent white flowers up to a foot wide without worrying about soil amendments, available at naturehills.com.

How quickly does this plant grow?

  • Haas Halo Hydrangea grows at a moderate pace, typically reaching 3-5 feet tall and wide within 2-3 years. As a hardy native arborescens variety, it establishes quickly once planted. Expect to see those impressive dinner plate-sized blooms in the first season since it flowers on new wood.

What pests or diseases affect this variety?

  • Haas Halo Hydrangea is naturally resistant to most pests and diseases, with deer typically avoiding this variety. As with most hydrangeas, watch for occasional aphids or powdery mildew in humid conditions. Ensure good air circulation and avoid overhead watering to prevent fungal issues.

Does it attract pollinators?

  • Yes, Haas Halo Hydrangea is excellent for attracting butterflies and other pollinators with its enormous white lace-cap blooms. The dinner plate-sized flowers provide abundant nectar resources throughout the blooming season. Plant in part sun for best pollinator appeal.