Troubleshooting
Crimson Flag Lily problems — and how to fix them
Crimson Flag Lily (Hesperantha coccinea) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Rhizome rot from winter waterlogging
The rhizomes are vulnerable to rotting in cold, wet soil over winter; apply a dry organic mulch in late autumn and ensure the planting site does not become waterlogged during frost.
Red spider mite in dry conditions
In hot, dry weather or indoors, red spider mite causes fine pale mottling on the foliage; increase humidity by misting and treat with an appropriate miticide or biological control (Phytoseiulus persimilis).
Prevent crimson flag lily problems before they start
Most crimson flag lily issues are care-mismatch, not bad luck. Dial in the basics:
Crimson Flag Lily problems — FAQ
Why is my crimson flag lily rhizome rot from winter waterlogging?
The rhizomes are vulnerable to rotting in cold, wet soil over winter; apply a dry organic mulch in late autumn and ensure the planting site does not become waterlogged during frost.
Why is my crimson flag lily red spider mite in dry conditions?
In hot, dry weather or indoors, red spider mite causes fine pale mottling on the foliage; increase humidity by misting and treat with an appropriate miticide or biological control (Phytoseiulus persimilis).