Greenstem Forsythia, Korean Forsythia
Forsythia viridissima var. koreana 'Kumson'

Family: Oleaceae (oh-lee-AY-see-ee) (Info)
Genus: Forsythia (for-SITH-ee-a) (Info)
Species: viridissima var. koreana
Cultivar: Kumson

Category:

Shrubs

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us

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)

Sun Exposure:

Light Shade

Danger:

Unknown - Tell us

Bloom Color:

Bright Yellow

Bloom Time:

Late Winter/Early Spring

Mid Spring

Foliage:

Grown for foliage

Deciduous

Variegated

Other details:

Unknown - Tell us

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:

Unknown - Tell us

Propagation Methods:

From hardwood cuttings

By simple layering

By serpentine layering

By stooling or mound layering

Seed Collecting:

Unknown - Tell us

Regional

This plant has been said to grow in the following regions:

Weaver, Alabama

Calistoga, California

East Hartford, Connecticut

Wethersfield, Connecticut

Marietta, Georgia

Washington, Illinois

Silver Spring, Maryland

Uxbridge, Massachusetts

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

show all

Gardeners' Notes:

1
positive
2
neutrals
0
negatives
RatingContent
Neutral

On Jun 21, 2014, Weerobin from Saint Louis, MO (Zone 6a) wrote:

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/ faint hint of variegation at best. Individual leaves or a cluster of leaves can be quite striking, but overall the plant isn't that attractive.

Positive

On Feb 24, 2010, ultasol from Kennewick, WA wrote:

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

Neutral

On Jan 3, 2010, stormyla from Norristown, PA (Zone 6b) wrote:

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 growing in part shade.