Troubleshooting
Liatris spicata problems — and how to fix them
Liatris spicata (Liatris spicata) 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.
Corm rot in wet soil
The leading cause of loss; corms rot in cold, waterlogged winter ground, so ensure sharp drainage.
Floppy stems
From shade or overly rich soil; grow in full sun on lean ground and stake taller forms in exposed sites.
Rodent damage to corms
Voles and mice may eat dormant corms; protect with grit or wire baskets in problem areas.
Powdery mildew or rust
Occasional in humid, crowded plantings; space well and keep air moving around the clumps.
Prevent liatris spicata problems before they start
Most liatris spicata issues are care-mismatch, not bad luck. Dial in the basics:
Liatris spicata varieties: common problems
Looking for liatris spicata in general rather than its problems? Read the full liatris spicata care guide — light, water, soil and feeding.
Liatris spicata problems — FAQ
Why is my liatris spicata corm rot in wet soil?
The leading cause of loss; corms rot in cold, waterlogged winter ground, so ensure sharp drainage.
Why is my liatris spicata floppy stems?
From shade or overly rich soil; grow in full sun on lean ground and stake taller forms in exposed sites.
Why is my liatris spicata rodent damage to corms?
Voles and mice may eat dormant corms; protect with grit or wire baskets in problem areas.
Why is my liatris spicata powdery mildew or rust?
Occasional in humid, crowded plantings; space well and keep air moving around the clumps.