James Burghardt
Family
Oleaceae
Botanical Name
Forsythia x intermedia 'Courtalyn'(WEEK END®) PPAF
Plant Common Name
Border Forsythia, Week End® Border Forsythia
General Description
The dwarf forsythia, Week End®, maintains a low but stark upright habit. It blooms in early spring like all other forsythias, but its flowers are longer lasting than most. Bright lemon yellow flowers thickly cover the upright stems creating a super spring show. This French introduction was awarded The RHS's Award of Garden Merit (AGM), which helps gardeners choose better plants for their gardens.
This tried and true spring-flowering deciduous shrub is known by all and loved by many. Its cheerful bright yellow blooms appear before the foliage unfolds and are some of the first to appear. In fact, the early blooms often open too early and are damaged by frost. Forsythia x intermedia is the most popular hybrid in commerce and is a cross between the two Asian species Forsythia suspensa and F. viridissima.
When mature, this dwarf deciduous shrub develops a low, upright habit. It bears bright golden yellow flowers with four prominent petals in late winter or early spring, depending on the temperature. The flowers are quick to appear in warm weather, which typically makes them vulnerable to damage during untimely warm spells. Its medium-green leaves are thin, plain and unassuming. They can develop purple hues before they drop in the fall but otherwise offer little in terms of visual interest.
Forsythia is very easy to grow. It grows best in full to partial sun and will tolerate a wide range of well-drained soil types. It is hardy to USDA zone 4, but the flower buds are only reliably hardy to zone 6. Prune judiciously to preserve its lovely arching habit. Forsythia has many landscape applications. It works well as a specimen plant, in informal hedges or massed in swaths across large open landscapes.
Late in the winter, while still in bud, its branches may be cut, placed in a vase of water and forced indoors. The buds usually take a week or so to open.
Characteristics
-
AHS Heat Zone
9 - 6
-
USDA Hardiness Zone
6 - 9
-
Sunset Zone
A2, A3, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 18, 19
-
Plant Type
Shrub
-
Sun Exposure
Full Sun, Partial Sun
-
Height
2'-4' / 0.6m - 1.2m
-
Width
2'-4' / 0.6m - 1.2m
-
Bloom Time
Early Spring, Late Winter
-
Native To
Hybrid Origin
Special Characteristics
-
Bark Texture
Smooth
-
Usage
Cutflower, Edging, Foundation, Hedges, Mixed Border
-
Sharp or Has Thorns
No
-
Invasive
No
-
Self-Sowing
No
