Troubleshooting
Orpine problems — and how to fix them
Orpine (Hylotelephium telephium) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Powdery mildew in damp, shaded conditions
White powdery coating on leaves in humid or overcrowded conditions. Improve air circulation and move to a sunnier spot. Remove affected leaves and apply a sulphur-based fungicide if severe.
Floppy, leggy growth
Shading or excess fertility causes tall, weak stems that flop. Apply the Chelsea Chop (cutting stems by half in late May) to promote compact, branching growth, or stake plants early.
Crown rot in waterlogged soil
Sitting in wet winter soil kills the crown. Ensure well-drained soil or plant on a slight slope. Grit added to the planting hole improves drainage in heavier soils.
Prevent orpine problems before they start
Most orpine issues are care-mismatch, not bad luck. Dial in the basics:
Looking for orpine in general rather than its problems? Read the full orpine care guide — light, water, soil and feeding.
Orpine problems — FAQ
Why is my orpine powdery mildew in damp, shaded conditions?
White powdery coating on leaves in humid or overcrowded conditions. Improve air circulation and move to a sunnier spot. Remove affected leaves and apply a sulphur-based fungicide if severe.
Why is my orpine floppy, leggy growth?
Shading or excess fertility causes tall, weak stems that flop. Apply the Chelsea Chop (cutting stems by half in late May) to promote compact, branching growth, or stake plants early.
Why is my orpine crown rot in waterlogged soil?
Sitting in wet winter soil kills the crown. Ensure well-drained soil or plant on a slight slope. Grit added to the planting hole improves drainage in heavier soils.