The Gardening Year

Watch out for

Vine weevil: Apply biological nematodes to the soil in autumn and spring, or use approved chemical controls.

Rhododendron bud blast: Remove and destroy infected buds promptly; improve air circulation and avoid wetting foliage.

Powdery mildew: Improve air circulation and apply a suitable fungicide if infection is severe.

Pieris moth caterpillars: Hand-pick caterpillars or use biological controls like nematodes and parasitic wasps.

Rhododendron leafhopper: Monitor for damage and use insecticidal soap or horticultural oil if populations are high.