Troubleshooting
Ithuriel's Spear problems — and how to fix them
Ithuriel's Spear (Triteleia laxa) 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.
Corm rot from summer moisture
The most common failure; corms left in wet soil through the summer dormancy rot quickly. In rainy-summer climates, lift corms after foliage dies down and store dry, or grow in raised beds with sharply draining gritty soil.
Thrips
Western flower thrips (Frankliniella occidentalis) can damage the flowers, causing silvery streaking and distortion. Inspect plants regularly during flowering; remove heavily infested material and apply an appropriate insecticide if damage is severe.
Prevent ithuriel's spear problems before they start
Most ithuriel's spear issues are care-mismatch, not bad luck. Dial in the basics:
Ithuriel's Spear problems — FAQ
Why is my ithuriel's spear corm rot from summer moisture?
The most common failure; corms left in wet soil through the summer dormancy rot quickly. In rainy-summer climates, lift corms after foliage dies down and store dry, or grow in raised beds with sharply draining gritty soil.
Why is my ithuriel's spear thrips?
Western flower thrips (Frankliniella occidentalis) can damage the flowers, causing silvery streaking and distortion. Inspect plants regularly during flowering; remove heavily infested material and apply an appropriate insecticide if damage is severe.