Can hydrangeas bloom in September?
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Can hydrangeas bloom in September?
Hydrangeas can bloom in September. By maintaining a suitable temperature and providing sufficient nutrients, the flowering period can last from June to frost. After the flowering period ends, it is necessary to prune the withered flowers and leaves immediately, apply carbendazim to the cut surface to prevent infection. Hydrangeas mainly propagate through division and cutting. During the breeding process, use wettable powder of dodine and emulsified solution of dimethoate to control diseases and pests.
Hydrangeas can bloom in September. By maintaining a suitable temperature and providing sufficient nutrients, the flowering period can start from June and last until the dormancy period of frost. The optimal growing temperature for the plant is between 18-28 degrees Celsius. After flowering, maintain a temperature of 16 degrees and fertilize every 15 days to extend the flowering period.
After the hydrangea flowering period ends, it is necessary to prune the withered flowers immediately. The lower two nodes of the plant do not have buds, so when pruning, not only the flower buds should be cut, but also two more leaves should be cut to reduce nutrient consumption. It is necessary to apply carbendazim to the cut position to avoid pathogen infection.
Hydrangeas mainly propagate through division and cutting. Division usually starts in early spring, separating the rooted branches from the mother plant and planting them directly in pots, placing them in a shaded position for care. Cutting is usually done during the plum rain season, cutting 20 cm long healthy tender branches from the top of the hydrangea, removing the leaves at the bottom, and inserting them into the soil, which takes about 15 days to root.
During the cultivation of hydrangeas, the main diseases are powdery mildew and leaf spot. After infection is confirmed, spray with a diluted solution of dodine wettable powder. The main pests are aphids and blind bugs. When pests are found on the branches, spray with a diluted solution of dimethoate emulsion to kill them.
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