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List of garden plant diseases : Blossom wilt disease

Shot-hole symptoms caused by blossom wilt disease

Shot-hole symptoms caused by blossom wilt disease

Blossom wilt disease causes severe damage to some varieties of flowering cherry, such as Prunus triloba and Prunus subhirtella ‘Autumnalis’. The blossom bunches including the associated leaves wilt and wither when the flowers are open. The result can be parts of branches with withered blossoms and healthy flowers.

Twigs die back and larger branches occasionally. The leaves of the surviving buds often show ‘shot-hole’ symptoms later in summer. The disease is more severe after a wet summer. There is no satisfactory remedy and badly affected trees may have to be removed.The trees recover somewhat following a dry sunny year. Sheltered trees are more affected. Try a feed of potash, at 30 grams per square metre of the area to the spread of the branches - it can help by hardening the foliage.

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