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Hydrangea arborescens has some common insect problems:
Aphids on Ornamental Landscape Plants
Mites Found on Flowers and Foliage
Hydrangea arborescens has some common disease problems:
Sooty Molds

Hydrangea arborescens

Phonetic Spelling
hy-DRAN-jee-ah ar-bor-ESS-sens
This plant has low severity poison characteristics.
See below
Description

Hydrangea arborescens, commonly known as smooth hydrangea or wild hydrangea, is a loosely and widely branched deciduous shrub that typically grows to 3-6’ (less frequently to 10’) tall. It is native to moist or rocky wooded slopes, ravines, streambanks and bluff bases from New York to Florida, west to Iowa, Missouri, Oklahoma, and Louisiana.

Several named cultivars have sterile flowers making a ball-shaped bloom. A few modern hybrids have been bred to have pink flowers. Unique to H. arborescens, the flower color is not affected by the soil pH. Hydrangea arborescens is very cold hardy but will also grow in warmer Carolina climates.

Many species of hydrangea, including this one, are susceptible to bud blight, bacterial wilt, leaf spots, mold, rust, and powdery mildew. Watch for aphids, mites, scale, and nematodes.

The wild hydrangea is easily grown in average, medium moisture, well-drained soils in part shade. It will tolerate full sun only if grown with consistent moisture. It is intolerant of drought, with foliage tending to decline considerably in dry conditions. Plants may die to the ground in harsh winters. Its blooms occur on new wood, so plants may be pruned back close to the ground in late winter to revitalize and to encourage vigorous stem growth and best form. If not pruned back, any weakened and/or damaged stems should be removed in early spring.

Fire Risk: This plant has a low flammability rating.

More information on Hydrangea.

Cultivars / Varieties:
Tags:
#bees#butterflies#deciduous#fall color#songbirds#poisonous#rain garden#wildlife plant#showy#honey bees#nectar plant#low maintenance#tsc#fall interest#low flammability#deer resistant#native garden#fire resistant#naturalizes#pollinator plant
 
Cultivars / Varieties:
Tags:
#bees#butterflies#deciduous#fall color#songbirds#poisonous#rain garden#wildlife plant#showy#honey bees#nectar plant#low maintenance#tsc#fall interest#low flammability#deer resistant#native garden#fire resistant#naturalizes#pollinator plant
  • Attributes:
    Genus:
    Hydrangea
    Species:
    arborescens
    Family:
    Hydrangeaceae
    Life Cycle:
    Woody
    Country Or Region Of Origin:
    Eastern U.S.
    Fire Risk Rating:
    low flammability
    Wildlife Value:
    The wild hydrangea flowers are attractive to butterflies and other insects. Songbirds eat the seeds. It is moderately resistant to damage from deer.
    Particularly Resistant To (Insects/Diseases/Other Problems):
    fire in the landscape.
    Dimensions:
    Height: 3 ft. 0 in. - 6 ft. 0 in.
    Width: 3 ft. 0 in. - 6 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Native Plant
    Poisonous
    Shrub
    Leaf Characteristics:
    Deciduous
    Habit/Form:
    Clumping
    Open
    Rounded
    Growth Rate:
    Medium
    Maintenance:
    Low
    Texture:
    Coarse
  • Cultural Conditions:
    Light:
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Drainage:
    Good Drainage
    Available Space To Plant:
    3 feet-6 feet
    NC Region:
    Mountains
    Piedmont
    Usda Plant Hardiness Zone:
    3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
  • Fruit:
    Display/Harvest Time:
    Fall
    Fruit Type:
    Capsule
    Fruit Description:
    Dehiscent seed capsules which ripen in October-November.
  • Flowers:
    Flower Color:
    Brown/Copper
    Cream/Tan
    Green
    Pink
    White
    Flower Inflorescence:
    Corymb
    Flower Value To Gardener:
    Showy
    Flower Bloom Time:
    Spring
    Summer
    Flower Petals:
    4-5 petals/rays
    Flower Size:
    3-6 inches
    Flower Description:
    The wild hydrangea has tiny white fertile flowers that bloom in May-July in flattened hairy clusters (corymbs to 2-6”across). Scattered continuing flowering may occur throughout summer to September. A few large sterile flowers usually appear at the cluster margins (usually not enough for a quality lacecap effect). Flowers give way to dehiscent seed capsules which ripen in October-November. The native Smooth Hydrangea is white, 6 to 8 inches, flattened corymb in summer; opens white then turns green and brown. The named cultivars have typical ball-shaped hydrangea flowers 8 to 12 inches across. Newer cultivars can be found with pink flowers.
  • Leaves:
    Leaf Characteristics:
    Deciduous
    Leaf Color:
    Brown/Copper
    Green
    Deciduous Leaf Fall Color:
    Gold/Yellow
    Leaf Type:
    Simple
    Leaf Arrangement:
    Opposite
    Leaf Shape:
    Ovate
    Leaf Margin:
    Serrate
    Hairs Present:
    No
    Leaf Length:
    3-6 inches
    Leaf Description:
    The wild hydrangea has gray-brown stems are clad with opposite, simple broad egg-shaped to rounded, sharply toothed, dark green leaves (2-6” long) with pale green undersides. The leaves turn yellow in fall.
  • Bark:
    Bark Color:
    Dark Brown
    Surface/Attachment:
    Shredding
    Bark Description:
    Brown and finely shredded.
  • Stem:
    Stem Is Aromatic:
    No
  • Landscape:
    Landscape Location:
    Slope/Bank
    Woodland
    Landscape Theme:
    Rain Garden
    Attracts:
    Butterflies
    Pollinators
    Songbirds
    Resistance To Challenges:
    Deer
    Fire
    Problems:
    Poisonous to Humans
  • Poisonous to Humans:
    Poison Severity:
    Low
    Poison Symptoms:
    TOXIC ONLY IF LARGE QUANTITIES EATEN. Nausea, stomach pain, vomiting, and sweating.
    Poison Toxic Principle:
    Hydrangin, a cyanogenic glycoside
    Causes Contact Dermatitis:
    No
    Poison Part:
    Bark
    Flowers
    Leaves
    Stems