Forthysia Bush. The best time for trimming forsythia is in the spring after the blooms fade. Every 2 to 3 years.
The forsythia genus has around 11 species of deciduous plants bearing flowers the most widespread being forsythia x intermedia. With their rich golden blooms in shades from pale yellow to rich gold these plants stand out. A forsythia plant forsythia spp can add dramatic flair to a yard in the early spring forsythia bushes are among the first plants of spring to burst forth in flower and in order to get the most from their brilliant yellow flowers you need to make sure that you take proper care of forsythia in your yard.
Treat the plant with pesticides and fungicides only when needed however since you do not need to worry about taking preventative measures.
Although this shrub has become naturalized in much of europe and north america its ancestors hail mostly from east asia namely china and the korean peninsula as well as one species from europe. There are about 11 species mostly native to eastern asia but one native to southeastern europe. Border forsythia forsythia x intermedia or golden bell ushers in spring with its vivid golden yellow flowers and is one of the most recognized shrubs in the south these hybrid forsythias are crosses between two species from eastern china forsythia suspensa weeping forsythia and f. Forsythia plants bloom on old wood and should be pruned just after flowering to preserve next year s blooms.