This shrub is prized for its profuse production of yellow flowers in the early spring. It is wide spreading and medium tall. Only the newer winter hardy cultivars should be used in hardiness zone #5.
Pronunciation
(for-SITH-i-a)
Plant Type
All Plants, Shrubs Deciduous
Hardiness Zone
4-8
Sunlight
full, some shade
Moisture
average
Soil & Site
average
Flowers
yellow to golden yellow, blooms before the leaves appear, the appearance of the leaves means the bloom period is coming to an end
Leaves
simple and dark green leaves with a nice purple fall foliage. I would consider this fall color as part of my fall color scheme.
Stems
prominent lenticels
Dimensions
Can be kept to around half its potential size by yearly pruning. Reaches 8-10 feet by 8-10 feet.
Maintenance
Pruning should be done in the spring after flowering. This promotes the production of new wood. On this wood the flowers for next year will be formed. Forsythia can be pruned back fairly hard.
Propagation
cuttings
Author's Notes
I have this Forsythia in a landscape for over 25 years. Blooms profusely every year, except for the year a got behind on my pruning and cut the shrub back late. Few if any flowers the next year.
Notes & Reference
#01-Manual of Woody Landscape Plants (Michael Dirr), #226-Shrubs and Vines for American Gardens (Donald Wyman)