Answer: Forsythias are naturally straggly and gangly and can grow about 8 feet high and wide, so plant them in a location where they will have enough room. The bushes were probably pruned prior to shipping, so they should not need any additional pruning now. They need the branches and their leaves to produce energy to root and grow, so it is a good idea to wait a year before pruning them at all. Amazing as it may seem now, they will fill in in just a few years.
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