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.
Native to China and Korea. From late winter to early spring, these fountain-shaped shrubs’ bare ...
These cold-hardy introductions have extended the range of forsythia into regions formerly too cold for...
Upright grower to 4–5 ft. tall and wide. Deep golden yellow blooms clothe stems densely from the...