Troubleshooting
Lyme Grass problems — and how to fix them
Lyme Grass (Leymus arenarius) 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.
Invasive rhizome spread
The plant is listed as invasive in parts of the Great Lakes region of the US; underground rhizomes can travel metres per year — install a buried root barrier at least 30 cm deep or grow in a large, buried container.
Aphids and spider mites
Occasional infestations of aphids or spider mites may appear in hot, dry conditions; a strong jet of water or an application of insecticidal soap usually provides sufficient control.
Prevent lyme grass problems before they start
Most lyme grass issues are care-mismatch, not bad luck. Dial in the basics:
Lyme Grass problems — FAQ
Why is my lyme grass invasive rhizome spread?
The plant is listed as invasive in parts of the Great Lakes region of the US; underground rhizomes can travel metres per year — install a buried root barrier at least 30 cm deep or grow in a large, buried container.
Why is my lyme grass aphids and spider mites?
Occasional infestations of aphids or spider mites may appear in hot, dry conditions; a strong jet of water or an application of insecticidal soap usually provides sufficient control.