Answer: There are several typical reasons why forsythia might not bloom. Forsythias bloom on old wood that grew the previous year. Excessive winter cold can sometimes prevent flowering. Another reason might be pruning at the wrong time of year. (The only "safe" time to prune is in the spring right after they bloom.) Another reason for lack of bloom might be too much shade. This is a plant that blooms best in full direct sun all day long. Maybe, if you look at the growing conditions for both parts you will be able to identify a difference that would account for this. I hope this helps you trouble shoot.
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