Analysis - view details of type of pest/disease/disorder |
Symptoms | Buds abnormally inflated, remaining unopened (esp. the terminal ones); often with a roundish entrance/emerging hole on the base; wood shavings mostly without resin; the bud is more or less mined totally, sometimes the mines reach the shoot below; varying among the species the bud is filled with crumbling feces (beetles) or without feces (moths). | |
Impact | No damage to older plants; on young plants intense infestation may cause branching anomalies or multiple tree tops as well as an increased predisposition to infection by microfungi causing shoot dieback. | |
Control | Mostly none necessary | |
Hosts | Spruce; Fir; | |
Affected plant parts | Shoot/Twig/Branch; |