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Forsythia x intermedia

Common Name(s):

Phonetic Spelling
for-SYE-thee-uh ex in-tur-MEE-dee-uh
Description

Drought and moderately salt tolerant; may develop suckers; prune oldest stems after flowering; rapid growth; many cultivars available. These plants are occasionally damaged by deer.

Quick ID Hints:

  • Leaves are lanceolate, toothed, with a gland at apex
  • Branches are square, 4-ridged, BROWN
  • Flowers are yellow, bell-shaped, with 4 'petals'

Deciduous shrub to 10', erect, spreading and fountainlike.

Blooms in early spring before leaves appear; much of flowering impact is lost if heavily pruned before flowering; used on banks, in massing, in shrub borders. 

Tolerates pollution, urban environments; soil adaptable; pH adaptable; easily transplanted; prune after flowering; moderately rapid, cane-like growth; relatively pest/disease-free.

This species is an artificial hybrid.

 

VIDEO Created by Elizabeth Meyer for "Trees, Shrubs and Conifers" a plant identification course offered in partnership with Longwood Gardens.

More information on Forsythia.

Profile Video:
See this plant in the following landscape:
Cultivars / Varieties:
  • 'Chaenomeles'
  • 'Gold Tide'
  • Primulina
'Chaenomeles', 'Gold Tide', Primulina
Tags:
#deciduous#drought tolerant#salt tolerant#apvg#tsc#cpp#fantz#tsc-s#non-toxic for horses#non-toxic for dogs#non-toxic for cats
 
Cultivars / Varieties:
  • 'Chaenomeles'
  • 'Gold Tide'
  • Primulina
'Chaenomeles', 'Gold Tide', Primulina
Tags:
#deciduous#drought tolerant#salt tolerant#apvg#tsc#cpp#fantz#tsc-s#non-toxic for horses#non-toxic for dogs#non-toxic for cats
  • Attributes:
    Genus:
    Forsythia
    Family:
    Oleaceae
    Particularly Resistant To (Insects/Diseases/Other Problems):
    Drought and salt resistant.
    Dimensions:
    Height: 8 ft. 0 in. - 10 ft. 0 in.
    Width: 10 ft. 0 in. - 12 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Shrub
    Woody Plant Leaf Characteristics:
    Deciduous
    Habit/Form:
    Arching
    Growth Rate:
    Rapid
    Texture:
    Medium
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Texture:
    Clay
    High Organic Matter
    Loam (Silt)
    Sand
    USDA Plant Hardiness Zone:
    6b, 6a, 7b, 7a, 8b, 8a
  • Fruit:
    Fruit Description:
    A 2-celled, dehiscent capsule, brown, ca 1/4" long, non-ornamental; seeds winged, many.
  • Flowers:
    Flower Color:
    Gold/Yellow
    Flower Size:
    < 1 inch
    Flower Description:
    Pale to deep yellow flowers in early spring; borne on one to two year-old growth. Solitary or clusters of 2-6 on old wood. (1-6) yellow, scentless, 1" long; corolla deeply 4-lobed, lobes spreading, campanulate; calyx 4-lobed.
  • Leaves:
    Woody Plant Leaf Characteristics:
    Deciduous
    Leaf Color:
    Green
    Purple/Lavender
    Deciduous Leaf Fall Color:
    Gold/Yellow
    Leaf Type:
    Simple
    Leaf Arrangement:
    Opposite
    Leaf Shape:
    Lanceolate
    Hairs Present:
    No
    Leaf Length:
    3-6 inches
    Leaf Description:
    Opposite, simple, medium to dark green leaves; 3-5 in. long; green to yellowish green fall color, sometimes purplish; holds late into fall. Lanceolate, acute with apicular gland, toothed on the upper half, medium to dark green above, lighter below, glabrous.
  • Stem:
    Stem Is Aromatic:
    No
    Stem Description:
    Brown, 4-ridged, heavily lenticeled; pith chambered, sometimes hollow.
  • Landscape:
    Resistance To Challenges:
    Salt