Scientific Name: Forsythia x intermedia cvs.
Common Name: showy forsythia
Family Name: Oleaceae
Origin: Garden origin
Hardiness Zone: Zone 5: (-29 to -23 °C)
Plant Type: Flowering cut plant, Shrub - deciduous
Mature Size: 2 - 3m x 3 - 4m (height x width)
Habit: Arching, Stiffly upright
Form: Irregular, Vase
Texture: Medium - fine
Landscape Uses: Cut flower or foliage, Group or mass planting, Mixed shrub border, Sheared hedge, Spring interest, Tall background
Exposure: Full sun, Filtered shade
Soil or Media: Well-drained
Leaves: Simple, Opposite, Soft flexible, Pinnate venation, Glabrous, Lanceolate, Ovate, Serrate
Flowers: Flowers solitary, Yellow, Mar-Apr
Fruit: Capsule, Brown, Sep-Oct
Key ID Features:
Shrub dense; leaves opposite, ovate to lanceolate, most blades 7-10cm long x 3-5cm wide, margins serrate midway towards apex; flowers 1.5-2cm wide, four deep bright yellow petals, Mar-Apr. Winter ID: buds greenish divergent; lenticels bumpy on older stems and trunks; young stems yellow-green before maturing to orange-brown.