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Althea (Rose of Sharon) Aphid Damage and Neem Oil Source

Follow-Up: Neem Oil Availability and Aphid Effects

A Michigan gardener's altheas show bud deformation (aphids) and leaf yellowing/drop; needs Neem oil source and explanation.

Neem Oil Source

North Country Organics online – Reliable supplier

Aphid Damage Explained

Aphids feed on leaves/stems causing yellowing and drop, not just buds. Orthenex (rose spray) may work but Neem preferred for dual insect/disease action.

Shrubs: Natural Aphid Control on Roses: Pet-Safe Methods for Bay Area Gardens; Heeling In Sale Shrubs for Winter on Long Island; Planting Althea (Rose of Sharon) Near Your House: Spacing Guide; Renovating Overgrown Boxwood Shrubs: Gradual Pruning; Cedar Shrubs in Planters: Long-Term Care and Overwintering; New Construction Landscape Failure: Compacted Soil and Mulch Volcanoes; Transplanting Blue Rug Juniper & Crape Myrtle in Atlanta: Wait for Fall; Arborvitae Row with Center Dieback: Drainage Problem Suspected; Repeated Arborvitae Failure in Maine: Soil Drainage and Fertilizer Errors; Normal Interior Browning in Newly Planted Arborvitae

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