Yews with White Substance: Mealybug Infestation

Yews turning dark, dropping needles, with white substance on stems and needles spreading to six shrubs.

Diagnosis: mealybugs. These insects suck sap, weakening plants.

Treatment: spray inside of plants with horticultural oil to suffocate mealybugs. Fertilize to encourage new growth.

Shrubs: Hebe Dieback in Moray, Scotland: Extended Cold + Fungus; Honeysuckle Runners Taking Over? Here's Why — And How to Contain Them; Fast-Growing Evergreen Screen: Techny Arborvitae for Zone 9 Clay; Fixing Yellow, Spotty Gardenia Leaves: Soil pH and Care Tips; Eradicating Invasive Shrubs and Managing Rugosa Rose Suckers; Fast-Growing Hedge Shrubs for Privacy Screening; Replacing a Large Yew: Soil Preparation and Winter Protection; Yew Hedge Dieback: Soil Contamination Suspected; Replacing Blue John Yew: Similar Cultivars; Hard Renovation Pruning for Mature Brown's Yew (Taxus × media 'Brownii')

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