Salvia involucrata · Perennial
Root rot: Ensure planting in well-drained soil and avoid overwatering to prevent waterlogging around the roots.
Powdery mildew: Improve air circulation by spacing plants adequately and apply a suitable fungicide if infection becomes severe.
Slugs and snails: Use physical barriers like copper tape or organic pellets to protect tender new growth during damp weather.
Aphids: Knock off infestations with a strong jet of water or treat with insecticidal soap for heavy attacks.
Winter damage: Provide winter protection such as mulch or cover for tender varieties in colder UK regions.