Greenstem Forsythia, Korean Forsythia 'Kumson'

Forsythiaviridissima var. koreana

Family
Oleaceae (oh-lee-AY-see-ee)
Genus
Forsythia (for-SITH-ee-a)
Synonym
Sun Exposure
Light Shade
Foliage
Grown for foliage
Deciduous
Good Fall Color
Height
36-48 in. (90-120 cm)
Spacing
36-48 in. (90-120 cm)
Hardiness
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)
Bloom Color
Bright Yellow
Bloom Time
Late Winter/Early Spring
Mid Spring
Other Details
Category
Shrubs
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)
Patent Information
Propagation Methods
From hardwood cuttings
By simple layering
By serpentine layering
By stooling or mound layering
Seed Collecting
Regional

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

Weaver, Alabama

Calistoga, California

East Hartford, Connecticut

Wethersfield, Connecticut

Marietta, Georgia

Washington, Illinois

Silver Spring, Maryland

Uxbridge, Massachusetts

Glenwood, Minnesota

Saint Louis, Missouri

Boone, North Carolina

Sherwood, Oregon

Blue Bell, Pennsylvania

Norristown, Pennsylvania

North Augusta, South Carolina

Christiana, Tennessee

Crossville, Tennessee

Belton, Texas

Lexington, Virginia

Kennewick, Washington

Richland, Washington

Muscoda, Wisconsin

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Featured Videos

Gardener's Notes:

1
positive
2
neutrals
0
negative
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W
Saint Louis, MO (Zone 6a) | June 2014 | neutral

My plant is vigorous, but only the leaves at the end of stems show the classic laceleaf variegation. All the other leaves are yellowish w...Read More

U
Kennewick, WA | February 2010 | positive

Less vigorous than other forsythias, the foliage is wonderful in the garden. I enjoy this plant for summer foliage more than spring bloom.

S
Norristown, PA (Zone 6b) | January 2010 | neutral

So far, my plant shows very little variegation. It is 4 years old and usually only 2 or 3 branches will have veriegated leaves. It is g...Read More

Featured
Leaf-footed Bug
(Acanthocephala declivis)
White-headed Stilt
(Himantopus leucocephalus)
Featured
Leaf-footed Bug
(Acanthocephala declivis)
White-headed Stilt
(Himantopus leucocephalus)