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

Foliage Color:

Chartreuse/Yellow

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

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:

Gainesville, Florida

Gardeners' Notes:

1
positive
1
neutral
0
negatives
RatingContent
Neutral

On Jul 31, 2015, Rickwebb from Downingtown, PA wrote:

I have never seen the straight or mother species here. It is not sold in the trade in the USA. What is sold is the dwarf cultivar of 'Broxensis', the Bronx Greenstem Forsythia. A few other cultivars exist somewhere.

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.