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Forsythia (Forsynthia)Forsythia x intermedia

Forsythia (Forsynthia)—Forsythia x intermedia

This fast growing, hardy, early blooming shrub signal the arrival of spring.

Zones 5 - 8
Zones 5 - 8

Hardiness Zones: Zones 5 - 8
The Forsythia (Forsynthia) can be expected to grow in the zones shown in color in the arborday.org zone map. (see map below)

Flowering Tree
Flowering Tree

Type of tree:
The Forsythia (Forsynthia) falls into the following type(s): Flowering Trees, Ornamental Trees, Shrubs

8' - 10' High
8' - 10' High

Mature Height:
The Forsythia (Forsynthia) grows to be 8' - 10' feet in height.

10' - 12' Spread
10' - 12' Spread

Mature Spread:
The Forsythia (Forsynthia) has a spread of about 10' - 12' at full maturity.

Fast Growth
Fast Growth

Growth Rate:
This tree grows at a fast growth rate. [More about this.]

Full Sun
Full Sun

Sun:
This Forsythia (Forsynthia) does well in full sun, partial shade.

Various Soils
Various Soils

Soil:
The Forsythia (Forsynthia) grows in acidic, alkaline, loamy, moist, rich, sandy, silty loam, well drained, wide range soils.

Rounded Shape
Rounded Shape

Shape:
This Forsythia (Forsynthia) has rounded shape.

More Info
More Info


The Forsythia (Forsynthia) can be expected to grow in the zones shown on this map.

Attributes:
The leaves are opposite, simple, coarsely toothed along the upper one-half, margin, ovate-oblong to oblong-lanceoate, 3"-5" long, half as wide, medium to dark green in summer, green to yellow-green in fall.

Description:
The forsythia is a hardy, deciduous, shrub with an irregular or rank-growing upright or arching habit. Forsythias should be given enough room to spread without topping the branches for part of their beauty lies in the graceful manner in which the branches grow. Its yellow flowers bloom early in the spring before the leaves appear. Late spring freezes may injure the buds reducing flower quality. The leaves are medium to dark green in summer turning green to yellow-green with an occasional tinge of burgundy in the fall. The forsythia tolerates a wide range of soils except permanently wet or exceptionally dry soil. The forsythia will flower best in full sun to partial shade. After a period of time, the forsythia will need pruning and moderate maintenance. Forsythias bloom on wood grown in the previous year. For this reason, pruning should be done in the spring immediately after flowering. The flower buds develop during the summer and fall, and fall pruning will remove them. However, if the buds are already formed, necessary pruning can be done 4-6 weeks before flowering time, and the pruned branches can be forced indoors. Pruning should follow the natural habit of the shrub removing old or dead wood. Cutting the older branches to the ground every year will cause new shoots to grow from the roots and renew the shrub. If the shrub is completely cut down to ground level, it will come back but will take 2-3 years to flower fully. For hedges, plant forsythia 4-6 feet apart.

History/Lore/Use:
The forsythia is named after the English horticulturist William Forsythe. It is also called the border forsythia or golden bell. Forsythia intermedia is a hybrid between F suspensa and F. viridissima. Many cultivars have been selected from this cross including dwarf and compact forms.

Leaves:
The leaves are opposite, simple, coarsely toothed along the upper one-half, margin, ovate-oblong to oblong-lanceoate, 3"-5" long, half as wide, medium to dark green in summer, green to yellow-green in fall.

Flower Color:
Pale to deep yellow, bell shaped flowers, borne 1-6 together on last year's growth.

Bloom Time:
early spring before the leaves appear..