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Disease on trolius #875749

Asked July 02, 2024, 10:40 PM EDT

I am wondering if you could tell me what this might be on my trolius. I haven’t seen it before and this is the only plant it is on. Thankyou

Kenai Peninsula County Alaska

Expert Response

This could be stem rot: a fungal disease. There appears to be black fruiting bodies in the cracked lesions/blisters. https://www.uaf.edu/afes/places/gbg/research/files/pdfs/2014.-Wagner-Holloway-McBeath.-Note.53.pdf

An Ask Extension Expert Replied July 03, 2024, 1:18 PM EDT

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Disease on trolius #875749

Expert Response

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