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Protecting Linden from Japanese Beetles & Milky Spore Timing

Tree Protection

Apply Bayer Advanced Tree & Shrub Insect Control (imidacloprid) as a soil drench. Roots move it to leaves; beetles die when feeding. One application protects all season.

Milky Spore for Grub Control (Northern Illinois)

Apply in August–September when grubs are actively feeding on roots. Spring application fails—soil too cold, grubs not feeding. Milky spore builds over 2–3 years, then suppresses grubs for decades.

Trees: Flowering Plum Defoliation: Japanese Beetle Feeding; Linden Tree Care: Gall Mites, Leaf Issues, and Treatment Options; Japanese Beetles on Japanese Maple: Identification and Control; Spider Mite Damage on Japanese Maple; Japanese Beetle Devastation on Plum Tree: Systemic Protection; Why Yellow Jackets Swarm Your Japanese Maple; Plum Tree Leaf Damage: Japanese Beetles and Control Options; Japanese Red Maple and Japanese Beetles: Manageable Risk; Japanese Beetle Control on Purple Plum Trees; Japanese Beetles: Identification and Integrated Management

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