Forsythia × intermedia at the Kew Royal Botanical Garden
Sunset®: 2-16,18,19
USDA: 5-9
Frost Tolerance: Blooming is consistent only in zone 6 or warmer, in zone 4 and 5, flower buds might get destroyed by extreme frost
Heat Tolerance: Bloom properly only if they get cold enough temperatures
Sun Exposure: Full sun
Origin: Garden hybrid
Growth Habits: Deciduous shrub, 8 to 10 feet tall (2.4-3 m), 10 to 12 feet spread (3-4 m), upright, arching branches
Flowers: Yellow flowers
Watering Needs: Moderate water
Propagation: Cuttings in early summer
Forsythia × intermedia is a cross between F. viridissima and F. suspensa var. fortunei.
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