• Photo of Hydrangea radiata (Hydrangea radiatas)

Plant Profile: Hydrangea radiata

Taxonomy: Hydrangea radiata

Names

Silverleaf, Silverleaf Hydrangea, Snowy Hydrangea

  • Photo of Hydrangea radiata (Hydrangea radiatas)

Phonetic Spelling:

Genus:Hydrangea

Species:radiata

Family:Hydrangeaceae

Silverleaf Hydrangea is a deciduous shrub native to the hydrangea family, primarily located in a limited region where western North Carolina, South Carolina, Tennessee, and Georgia converge. It thrives in rocky forests and on rock outcrops, often appearing prominently along road banks. From May to July, its striking white sterile flowers encircle smaller fertile florets, drawing in numerous pollinators. This shrub typically reaches heights of 3 to 6 feet, featuring an open structure with a rounded crown and multiple unbranched stems adorned with shreddy bark. The silvery undersides of its leaves create a beautiful display when stirred by the wind. Since blooms develop on new growth, the plants can be pruned back to the ground in late winter for rejuvenation.

Silverleaf Hydrangea thrives in partial shade and prefers medium-moist, organic, well-drained, acidic soils. It is well-suited for woodland gardens, flourishing in environments that offer partial to full shade. Increased sunlight exposure necessitates more frequent watering. This plant can be effectively used in mass plantings or grouped within shrub borders, making it an excellent choice for native woodland gardens.

Hydrangea radiata Feature Summary

Hydrangea radiata Image Gallery

Tags

#deciduous
#white flowers
#silver leaves
#deciduous shrub
#native shrub
#NC native
#food source fall
#food source herbage
#food source nectar
#food source pollen
#bird friendly
#food source hard mast fruit
#mammals
#butterfly friendly
#pollinators
#audubon
#woodlands

Similar Plants

Hydrangea radiata Feature Summary

Attributes
Central and southeastern U.S.A.
This plant attracts birds, butterflies, other pollinators, and small mammals.
Fruit
Dry, light brown, ribbed, dehiscent seed capsules appearing in early fall, October-November.
Brown/Copper
Flowers
Sterile white flowers surround fertile florets and bloom from May to July. Clusters are 3-6 inches wide.
3-6 inches
Leaves
2-8 inch long green leaves with toothed edges and white/silver underside of its leaves,
Green
Gray/Silver
3-6 inches
Bark
Shreddy bark
Dark Brown
Whole Plant Traits
Shrub
Native Plant
Rounded
Erect
Cultural Conditions
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Acid (<6.0)
Good Drainage
Moist
Mountains
Piedmont
4a
4b
5b
5a
6a
6b
7a
7b
8b
8a
3a
3b
9a
9b
Loam (Silt)
Landscape
Butterfly Garden
Native Garden
Woodland
Naturalized Area
Butterflies
Pollinators
Songbirds
Small Mammals

Hydrangea radiata Attributes

Hydrangea radiata: Country Or Region Of Origin

Central and southeastern U.S.A.

Hydrangea radiata: Wildlife Value

This plant attracts birds, butterflies, other pollinators, and small mammals.

Hydrangea radiata: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Hydrangea radiata Fruit

Hydrangea radiata: Fruit Description

Dry, light brown, ribbed, dehiscent seed capsules appearing in early fall, October-November.

Hydrangea radiata: Fruit Type

Achene
Aggregate
Berry
Capsule
Caryopsis
Drupe
Follicle
Legume
Nut
Pome
Samara
Schizocarp
Siliqua

Hydrangea radiata: Fruit Color

grass
Brown/Copper

Hydrangea radiata: Display/Harvest Time

Fall
Spring
Summer
Winter

Hydrangea radiata Flowers

Hydrangea radiata: Flower Description

Sterile white flowers surround fertile florets and bloom from May to July. Clusters are 3-6 inches wide.

Hydrangea radiata: Flower Color

filter_vintage
White

Hydrangea radiata: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Hydrangea radiata: Flower Value To Gardener

Edible
Fragrant
Good Cut
Good Dried
Long Bloom Season
Long-lasting
Showy

Hydrangea radiata: Flower Bloom Time

Winter
Spring
Summer
Fall

Hydrangea radiata: Flower Size

1-3 inches
3-6 inches
< 1 inch
> 6 inches

Hydrangea radiata Leaves

Hydrangea radiata: Leaf Description

2-8 inch long green leaves with toothed edges and white/silver underside of its leaves,

Hydrangea radiata: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Hydrangea radiata: Leaf Color

spa
Gray/Silver
spa
Green

Hydrangea radiata: Leaf Type

Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple

Hydrangea radiata: Leaf Margin

Crenate
Crenulate
Dentate
Denticulate
Doubly Crenate
Doubly Dentate
Doubly Serrate
Entire
Lobed
Serrate
Sinuate
Undulate

Hydrangea radiata: Hairs Present

No
Yes

Hydrangea radiata: Leaf Length

< 1 inch
1-3 inches
3-6 inches
> 6 inches

Hydrangea radiata Bark

Hydrangea radiata: Bark Description

Shreddy bark

Hydrangea radiata: Bark Color

grass
Dark Brown

Hydrangea radiata Whole Plant Traits

Hydrangea radiata: Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower

Hydrangea radiata: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Hydrangea radiata: Habit/Form

Arching
Ascending
Broad
Cascading
Climbing
Clumping
Columnar
Conical
Creeping
Dense
Erect
Horizontal
Irregular
Mounding
Multi-stemmed
Multi-trunked
Open
Oval
Prostrate
Pyramidal
Rounded
Spreading
Vase
Weeping

Hydrangea radiata Cultural Conditions

Hydrangea radiata: Light

Dappled Sunlight (Shade through upper canopy all day)
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)

Hydrangea radiata: Soil pH

Acid (<6.0)
Alkaline (>8.0)
Neutral (6.0-8.0)

Hydrangea radiata: Soil Drainage

Frequent Standing Water
Good Drainage
Moist
Occasional Flooding
Occasionally Dry
Occasionally Wet
Very Dry

Hydrangea radiata: NC Region

Coastal
Mountains
Piedmont

Hydrangea radiata: USDA Plant Hardiness Zone

thermostat
3a
thermostat
3b
thermostat
4a
thermostat
4b
thermostat
5a
thermostat
5b
thermostat
6a
thermostat
6b
thermostat
7a
thermostat
7b
thermostat
8a
thermostat
8b
thermostat
9a
thermostat
9b

Hydrangea radiata: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Hydrangea radiata Stem

Hydrangea radiata: Stem Is Aromatic

No
Yes

Hydrangea radiata Landscape

Hydrangea radiata: Landscape Theme

Asian Garden
Butterfly Garden
Children's Garden
Cottage Garden
Cutting Garden
Drought Tolerant Garden
Edible Garden
English Garden
Fairy Garden
Garden for the Blind
Native Garden
Nighttime Garden
Pollinator Garden
Rain Garden
Rock Garden
Shade Garden
Water Garden
Winter Garden

Hydrangea radiata: Design Feature

Accent
Barrier
Border
Flowering Tree
Foundation Planting
Hedge
Mass Planting
Screen/Privacy
Security
Shade Tree
Small groups
Small Tree
Specimen
Street Tree
Understory Tree

Hydrangea radiata: Resistance To Challenges

Black Walnut
Compaction
Deer
Diseases
Drought
Dry Soil
Erosion
Fire
Foot Traffic
Heat
Heavy Shade
Humidity
Insect Pests
Pollution
Poor Soil
Rabbits
Salt
Slugs
Squirrels
Storm damage
Urban Conditions
Voles
Wet Soil
Wind

Hydrangea radiata: Landscape Location

Coastal
Container
Hanging Baskets
Houseplants
Lawn
Meadow
Naturalized Area
Near Septic
Patio
Pond
Pool/Hardscape
Recreational Play Area
Riparian
Rock Wall
Slope/Bank
Small Space
Vertical Spaces
Walkways
Woodland

Hydrangea radiata: Attracts

Bats
Bees
Butterflies
Frogs
Hummingbirds
Moths
Pollinators
Predatory Insects
Reptiles
Small Mammals
Songbirds
Specialized Bees