Aphids are small, soft-bodied insects clustering on leaf undersides and shoot tips. They excrete sticky honeydew, which hosts black sooty mold. Heavy infestations curl leaves and reduce vigor.
Malathion is effective and labeled for fruit trees. Spray both leaf surfaces thoroughly. Repeat at 7–10 day intervals for 2–3 applications. Wash fruit before eating. Note: Malathion harms beneficial insects; apply in early morning or evening when pollinators are less active.
Imidacloprid (Bayer Advanced Tree & Shrub Insect Control) applied as a soil drench in early spring moves up the xylem and kills aphids as they feed. One application protects for months. Do not apply during bloom to protect bees.
Plum Tree with Jelly-Like Sap: Borer Infestation
Black Knot on Plum Trees: Fruit Safety and Disease Management
Maples Buried by Construction Fill: Emergency Root Flare Exposure
Plum Tree Pruning: Avoiding Silver Leaf Disease with Proper Timing
Growing Plum Trees: Varieties, Planting & Pruning Guide
Growing Plums: Reliable, Compact, and Beautiful Fruit Trees
Birch Aphids Dripping Honeydew: Treat with Imidacloprid in March
Premature Fruit Ripening and Drop in Plum Trees: Environmental Causes
Aphids on Aspen: Honeydew, Sooty Mold, and Organic Management
Plum Aphids in Curled Leaves: Atomic Grow and Pure Neem Oil
Oleander Black Bark and Leaves: Sooty Mold from Aphids/Scale and Atomic Grow
Flowering Plum Care: Sun, Soil pH, Pruning, and Watering
Borers in Japanese Plum Trees: Identification and Control
Aphid Honeydew on Silver Birch: Autumn Diagnosis and Spring Management
Copyright © www.100flowers.win Botanic Garden All Rights Reserved