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Greenstem Forsythia, Korean Forsythia
Forsythia viridissima

Family: Oleaceae (oh-lee-AY-see-ee) (Info)
Genus: Forsythia (for-SITH-ee-a) (Info)
Species: viridissima (vir-id-ISS-ih-muh) (Info)

Category:

Shrubs

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

Chartreuse/Yellow

Other details:

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

Average Water Needs; Water regularly; do not overwater

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:

Gainesville, Florida

Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Feb 21, 2011, KanapahaLEW from Alachua, FL (Zone 8b) wrote:

Three small clumps at Kanapaha Botanical Gardens flower faithfully every February. These do not sucker rampantly like F. x intermedia. Each clump has enlarged very slowly.