Troubleshooting
Cascade Purple Aubrieta problems — and how to fix them
Cascade Purple Aubrieta (Aubrieta 'Cascade Purple') 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.
Crown rot
Caused by excessive soil moisture, especially in summer. Ensure sharp drainage and avoid watering the crown. Remove affected material promptly and improve drainage.
Powdery mildew
Can appear in humid, stagnant conditions. Improve air circulation and avoid overhead watering. Cut back mats after flowering to reduce disease pressure and encourage fresh growth.
Becoming straggly
Without annual trimming, plants become woody and open. Shear back by half to two-thirds immediately after flowering to maintain a dense, compact mat and promote fresh foliage.
Prevent cascade purple aubrieta problems before they start
Most cascade purple aubrieta issues are care-mismatch, not bad luck. Dial in the basics:
Cascade Purple Aubrieta problems — FAQ
Why is my cascade purple aubrieta crown rot?
Caused by excessive soil moisture, especially in summer. Ensure sharp drainage and avoid watering the crown. Remove affected material promptly and improve drainage.
Why is my cascade purple aubrieta powdery mildew?
Can appear in humid, stagnant conditions. Improve air circulation and avoid overhead watering. Cut back mats after flowering to reduce disease pressure and encourage fresh growth.
Why is my cascade purple aubrieta becoming straggly?
Without annual trimming, plants become woody and open. Shear back by half to two-thirds immediately after flowering to maintain a dense, compact mat and promote fresh foliage.