Willow Leaf Blister Gall

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Willow leaf blister gall or willow redgall on Crack Willow (<i>Salix fragilis</i>). The blister- or pustule-like galls, which are a reaction to the invasion of the larvae of tiny sawflies, are initially green, age to red and then turn dry and brown after the larvae within have pupated. pests-and-diseases-3512htm'>Plant. Pests and Diseases</a>
 

Willow leaf blister gall or willow redgall on Crack Willow (Salix fragilis). The blister- or pustule-like galls, which are a reaction to the invasion of the larvae of tiny sawflies, are initially green, age to red and then turn dry and brown after the larvae within have pupated. pests-and-diseases-3512htm'>Plant. Pests and Diseases
 

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