Native to China and Korea. From late winter to early spring, these fountain-shaped shrubs’ bare branches are covered with 3/4–1 1/2-in. yellow flowers; budded branches can be forced for indoor bloom. During the rest of the growing season, medium green, rounded leaves with pointed tips blend well with other background shrubs. Use as a screen, espalier, or bank cover; or plant in a shrub border. Tolerate most soils. Prune after bloom by cutting to the ground a third of the branches that have flowered; also remove the oldest branches and weak or dead wood. In coldest-winter climates, flower buds may be destroyed by temperatures of 15° to 20°F/26° to 29°C.
These cold-hardy introductions have extended the range of forsythia into regions formerly too cold for successful flowering—or even for the plant’s survival.
‘Meadowlark’. To 6–9 ft. tall, 10 ft. wide; semiarching habit. Bright yellow flowers open from buds hardy to –35°F (–37°C).
‘New Hampshire Gold’. Mounding habit to 5 ft. tall and broad, with drooping yellow flowers. Buds are hardy to –35°F (–37°C).
‘Northern Sun’. Erect grower to 8–10 ft. tall and slightly narrower; reliably bud-hardy to –30°F (–34°C).
From China. Stiff-looking shrub that grows to 6–10 ft. tall and wide, with deep green foliage, olive green stems, and greenish yellow flowers. ‘Bronxensis’ is a slow-growing dwarf to 1 ft. high, 2–3 ft. wide; useful as a groundcover or in borders.
Forsythia viridissima koreana
Grows to 6 ft. tall, 5 ft. wide, with silver-veined, dark-green leaves. Yellow flowers appear on purple branches in early spring.
This group of hybrids between parents F. suspensa and F. viridissima includes several varieties whose sizes range from 2 ft. to 10 ft. tall.Forsythia ‘Arnold Dwarf’
This hybrid grows to 1 1/2–3 ft. tall, 6 ft. wide. Flowers are sparse and not especially attractive, but the plant is a useful, fast-growing groundcover for cold climates.
These cold-hardy introductions have extended the range of forsythia into regions formerly too cold for...
Native to China and Korea. From late winter to early spring, these fountain-shaped shrubs’ bare ...
Grows stiffly upright to 7 ft. with a 4–6-ft. spread. Profuse tawny yellow blooms survive spring...