B. Rosie Lerner, Extension Consumer Horticulture Specialist
Gardeners sometimes wonder if something has damaged their hydrangeas, but it is perfectly normal for them to have two strikingly different kinds of flowers occuring in the same cluster. The larger, showy flowers towards the outside of the cluster are sterile flowers, meaning they are not capable of producing seed. The smaller, less noticable flowers in the center of the cluster are fertile flowers.
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| Fertile Hydrangea | Sterile Hydrangea | Hydrangea Head |
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