Deeproot Plant Base Online - Forsythia x intermedia 'Arnold Giant'

Plant Base Online (beta)

botanical name:
Forsythia x intermedia 'Arnold Giant'

family: Oleaceae

characteristics: shrub
height: 2.00m width: 1.50m
growth rate: fast
growth habit: bushy
leaf colour: green
flower colour: yellow
main period of interest: Spring

poisonous or irritant

growing conditions: full sun, part shade, moist soil, clay soil
prefered soil pH: any
minimum temperature: -29°C
USDA zone: 5 to 9

description:
Robust, bushy, deciduous shrub. Sparse but very large, nodding, deep yellow flowers in the spring before the leaves emerge.

cultivation:
Any moderately fertile, moist, well drained soil in full sun or light dappled shade. Easy to grow and not fussy. Prune after flowering, reducing new shoots and cut back some of the old shoots to the base.

propagation:
Greenwood cuttings in late spring or semi-ripe cuttings in late summer.

other notes:
Raised at the Arnold Arboretum in 1939.