Trifolium pratense · Perennial
Clover root aphid: Improve soil drainage and avoid excessive nitrogen fertiliser to reduce susceptibility.
Slugs and snails: Use physical barriers like copper tape or apply iron phosphate pellets around young plants.
Powdery mildew: Ensure good air circulation and avoid overhead watering to keep foliage dry.
Anthracnose leaf spot: Remove infected debris and improve air flow; fungicides are rarely needed for ornamental use.
Nutrient deficiency: Test soil pH and apply a balanced, slow-release fertiliser if growth is poor.