Are you seeing brown, dry leaves on trees this spring? They may have been damaged by cold weather.
Thank you for supporting our journalism. This article is available exclusively for our subscribers, who help fund our work at the Chicago Tribune.“We didn’t get a hard freeze this spring, but we have had nights that got cold enough for frost,” said Sharon Yiesla, plant knowledge specialist at The Morton Arboretum in Lisle. Several times in April, it was cold enough to damage new leaves that had just opened from their buds.“The good news is that the trees can recover,” Yiesla said.
New leaves are the ones vulnerable to frost damage. “It happens if cold hits just when the leaves are new and tender,” Yiesla said. Although there were spells of 80-degree days in April and May, there also were nights below the 32-degree freezing mark. The small brown leaves on this ginkgo tree were killed by cold, but the tree is already replacing them with new green leaves.
Rain helps, but rainfall has been short in much of the Chicago region. According to the Illinois State Climatologist, most of northeastern Illinois received only a half to a quarter of normal rainfall during April and May. “In a dry spring, it’s a good idea to water a frost-damaged tree, or any tree,” Yiesla said.
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