Fall isn't just a time to harvest; it's also crucial for preparing gardens against pests. Kansas State University's horticulture specialist, Cynthia Domenghini, underscores the importance of preventive measures against elm leaf beetles.
These beetles, appearing twice annually, remain dormant during winter. As spring emerges and elm trees sprout leaves, beetles become active, with females laying eggs. The young larvae are distinguishable as dark, hairy grubs while the older ones bear yellow bodies marked by dark stripes. When mature, they seek shelter, usually at the tree's base.
The primary damage to elm trees is from the larvae that feed off the leaves, leaving a skeletonized pattern. Meanwhile, the adult beetles make holes in the leaves, causing them to discolor and fall off. While there are insecticides available for treatment, Domenghini advises against spraying healthy trees in the fall.
For those considering chemical intervention, available options include acephate, spinosad, and lambda cyhalothrin.
Domenghini, along with her team at K-State's Department of Horticulture and Natural Resources, offers a weekly newsletter . This source provides valuable tips for maintaining gardens and landscapes. Interested readers can access it online or receive weekly email updates.
Photo Credit: gettyimages-sizsus
Categories: Kansas, Rural Lifestyle