By Linda Williams, DNR Forest Health Specialist, Woodruff; Linda.Williams@wisconsin.gov or 920-360-0665

Basswood leaves show damage after feeding of introduced basswood thrips. / Photo Credit: Wisconsin DNR.
For the second consecutive year, damage from introduced basswood thrips (Thrips calcaratus) is significant in some northeastern Wisconsin counties. Introduced basswood thrips are tiny, invasive insects that feed inside tree buds in early spring. Leaves are then deformed when they expand and can look like frost or wind has damaged them.
Continue reading “Basswood Thrips Causing Crumpled Leaves, Thin Crowns”