Check the undersides of the leaves, and you might find the culprit: large groups of aphids and/or the sticky residue they leave behind after feeding. (Or, on plants with tightly-packed leaves like ...
They spread by producing crawling young which find new areas to colonise then produce young. In July winged forms fly off to infest other plants. Breeding stops in autumn when immature aphids seek ...
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Additionally, using row covers can protect plants during peak beetle season. For grub control, apply beneficial nematodes or milky spore powder to the soil to target the larvae. Regular monitoring and ...