Ilex Species, Winterberry Holly, Black Alder, Michigan Holly, Common Winterberry

Ilexverticillata

Family
Aquifoliaceae (a-kwee-foh-lee-AY-see-ee)
Genus
Ilex (EYE-leks)
Species
verticillata (ver-ti-si-LAH-tuh)
Synonym
Prinos verticillatus
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Grown for foliage
Deciduous
Provides Winter Interest
Height
6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)
Spacing
6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)
Hardiness
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
Danger
N/A
Bloom Color
White/Near White
Bloom Time
Late Spring/Early Summer
Other Details
Category
Shrubs
Trees
Water Requirements
Requires consistently moist soil; do not let dry out between waterings
Very high moisture needs; suitable for bogs and water gardens
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
Soil pH requirements
4.6 to 5.0 (highly acidic)
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Propagation Methods
From softwood cuttings
From semi-hardwood cuttings
By simple layering
Seed Collecting
Remove fleshy coating on seeds before storing
Properly cleaned, seed can be successfully stored
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Regional

This plant is said to grow outdoors in the following regions:

Farmington, Connecticut

Ingleside, Illinois

Clermont, Kentucky

Georgetown, Kentucky

Louisville, Kentucky

Nicholasville, Kentucky

Paris, Kentucky

Versailles, Kentucky

Litchfield, Maine

Cumberland, Maryland

Oakland, Maryland

Hopkinton, Massachusetts

Royal Oak, Michigan

Minneapolis, Minnesota

Cole Camp, Missouri

Eunice, Missouri

Munsonville, New Hampshire

Holly Springs, North Carolina

Greencastle, Pennsylvania

Pottstown, Pennsylvania

Souderton, Pennsylvania

Wilkes Barre, Pennsylvania

Chester, Virginia

Leesburg, Virginia

Ames Lake, Washington

Redmond, Washington

Union Hill-Novelty Hill, Washington

show all

Featured Videos

Gardener's Notes:

4
positives
1
neutral
1
negative
Sort By:
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A
New Jersey 6b, NJ | November 2018 | positive

Easy plant, will wilt without water, can take wet feet, needs Southern Gentleman as a pollinator, for ours no more than six feet away for...Read More

R
| December 2016 | positive

grows well in Moscow, more than 20 years, frost was -35 ° C

S
Souderton, PA (Zone 6b) | September 2010 | positive

This is a great plant for an explosion of color. I planted large cherry laurel bushes in front of my porch and then planted winterberry ...Read More

C
C
West Pottsgrove, PA (Zone 6b) | April 2009 | positive

Spectacular in winter with lots of bright red berries on female shrubs, this native American shrub has lots of selections and a few hybri...Read More

C
South Lyme, CT (Zone 7a) | November 2008 | negative

This plant is way overused in Connecticut. If you're going to plant a holly, why plant one that loses its leaves in winter? I think havin...Read More

M
M
Benton, KY (Zone 7a) | August 2006 | neutral

Information only, I have not grown this palnt.

This shrub is decidous and the small white flowers are located in the leaf ...Read More

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