Veronica officinalis · Perennial
Powdery mildew: Improve air circulation and water at the base; apply a biological fungicide if severe.
Slugs and snails: Use beer traps, copper tape barriers, or iron phosphate-based pellets to control populations.
Aphids: Spray off with a strong jet of water or introduce natural predators like ladybirds.
Root rot: Ensure well-draining soil and avoid overwatering; remove affected plants to prevent spread.
Vine weevil: Apply nematodes to the soil in autumn or use biological controls for adult beetles.