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Hydrangea arborescens 'Haas' Halo'

Phonetic Spelling
hy-DRAN-jee-uh ar-bor-RES-senz
Description

Wild hydrangea ‘Haas’ Halo’ is a woody, deciduous, perennial shrub cultivar in the Hydrangeaceae (hydrangea) family with a mounding habit lace-cap flowers and a rapid growth rate. At maturity it will be 4 to 6 feet tall and 3 to 5 feet wide. The parent plant is native to North America. The name hydrangea is derived from Greek and Latin and taken to mean water vessel, in reference to the "cup-like form of the seed-capsule." 

Provide this shrub with moist to occasionally dry soil and while it withstands partial or deep shade, the best flowering will occur in full sun. 'Haas Halo' withstands heat and humidity better than other smooth hydrangeas as long as it has plenty of water.  It tolerates various soil textures as long as they have a neutral to acidic pH.  Prune the shrub back in the spring to encourage a larger flower display.

This hydrangea features very large, lace-cap blooms from June through July. The flowers attract bees and butterflies. The foliage is a deep blue-green, and the stout stems will not droop after a hard rain. Dried flower heads provide winter interest.

Plant it in mass in a woodland, pollinator, or winter garden. Use in a shrub border or as an accent or specimen or planted near a lawn or plant it in a cutting garden.

Insects, Diseases, and Other Plant Problems:  No significant problems.

VIDEO Created by Elizabeth Meyer for "Trees, Shrubs and Conifers" a plant identification course offered in partnership with Longwood Gardens.

More information on Hydrangea arborescens.

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Tags:
#showy flowers#heat tolerant#white flowers#deciduous shrub#shade garden#winter interest#accent plant#mass planting#summer flowers#large flowers#native garden#cutting garden#pollinator plant#flowers mid-summer#flowers late summer#humidity tolerant#butterfly friendly#partial shade tolerant#bee friendly#heavy shade tolerant#shrub borders#woodland garden#lawn planting
 
Cultivars / Varieties:
Tags:
#showy flowers#heat tolerant#white flowers#deciduous shrub#shade garden#winter interest#accent plant#mass planting#summer flowers#large flowers#native garden#cutting garden#pollinator plant#flowers mid-summer#flowers late summer#humidity tolerant#butterfly friendly#partial shade tolerant#bee friendly#heavy shade tolerant#shrub borders#woodland garden#lawn planting
  • Attributes:
    Genus:
    Hydrangea
    Species:
    arborescens
    Family:
    Hydrangeaceae
    Life Cycle:
    Woody
    Wildlife Value:
    Bees and butterflies are attracted to this plant.
    Dimensions:
    Height: 4 ft. 0 in. - 6 ft. 0 in.
    Width: 3 ft. 0 in. - 5 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Perennial
    Woody Plant Leaf Characteristics:
    Deciduous
    Habit/Form:
    Mounding
    Growth Rate:
    Rapid
    Texture:
    Coarse
  • Cultural Conditions:
    Light:
    Deep shade (Less than 2 hours to no direct sunlight)
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Texture:
    Clay
    High Organic Matter
    Loam (Silt)
    Sand
    Soil pH:
    Acid (<6.0)
    Neutral (6.0-8.0)
    Soil Drainage:
    Moist
    Occasionally Dry
    Available Space To Plant:
    3 feet-6 feet
    NC Region:
    Coastal
    Mountains
    Piedmont
    USDA Plant Hardiness Zone:
    3b, 3a, 4a, 4b, 5b, 5a, 6b, 6a, 7b, 7a, 8b, 8a, 9b, 9a
  • Fruit:
    Display/Harvest Time:
    Fall
    Fruit Type:
    Capsule
    Fruit Description:
    Dehiscent seed capsules
  • Flowers:
    Flower Color:
    White
    Flower Inflorescence:
    Corymb
    Head
    Flower Value To Gardener:
    Good Dried
    Showy
    Flower Bloom Time:
    Summer
    Flower Description:
    Lace-cap flowers are up to 8 inches across. Outer showy white florets are sterile while the small greenish inner florets are fertile. Dried flower heads provide late-season interest. Blooms from mid June through early July.
  • Leaves:
    Woody Plant Leaf Characteristics:
    Deciduous
    Leaf Color:
    Blue
    Green
    Leaf Feel:
    Leathery
    Smooth
    Leaf Type:
    Simple
    Leaf Shape:
    Cordate
    Ovate
    Leaf Margin:
    Serrate
    Hairs Present:
    No
    Leaf Length:
    3-6 inches
    Leaf Width:
    3-6 inches
    Leaf Description:
    Leathery leaves may appear deep bluish-green. They are 3-6 inches long with toothed margins, rounded base and pointed tip.
  • Stem:
    Stem Is Aromatic:
    No
  • Landscape:
    Landscape Location:
    Lawn
    Woodland
    Landscape Theme:
    Cutting Garden
    Pollinator Garden
    Shade Garden
    Winter Garden
    Design Feature:
    Accent
    Border
    Mass Planting
    Specimen
    Attracts:
    Bees
    Butterflies
    Resistance To Challenges:
    Heat
    Heavy Shade
    Humidity