Troubleshooting
Ploughman's Spikenard problems — and how to fix them
Ploughman's Spikenard (Inula conyzae) 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.
Root rot in heavy or wet soils
The taproot rots rapidly in poorly drained or clay-dominant soils; plant only into gritty, free-draining substrates and avoid planting in low-lying ground that holds winter moisture.
Failure to self-seed
As a biennial it relies on setting viable seed to persist; avoid deadheading and leave flowerheads intact through autumn so seeds can disperse onto bare soil nearby.
Prevent ploughman's spikenard problems before they start
Most ploughman's spikenard issues are care-mismatch, not bad luck. Dial in the basics:
Ploughman's Spikenard problems — FAQ
Why is my ploughman's spikenard root rot in heavy or wet soils?
The taproot rots rapidly in poorly drained or clay-dominant soils; plant only into gritty, free-draining substrates and avoid planting in low-lying ground that holds winter moisture.
Why is my ploughman's spikenard failure to self-seed?
As a biennial it relies on setting viable seed to persist; avoid deadheading and leave flowerheads intact through autumn so seeds can disperse onto bare soil nearby.