Lamium purpureum · Annual
Slugs and snails: Use beer traps, copper tape barriers, or iron phosphate pellets to control populations.
Powdery mildew: Improve air circulation and spray with a sulphur-based fungicide if severe.
Aphids: Encourage natural predators like ladybirds or use a strong jet of water to dislodge them.
Root rot: Ensure well-drained soil and avoid overwatering, especially in winter.