põhjustab petuunial juurekaela ja juurte ülaosa tumenemist ja pehmenemist, kahjustatud taimed närbuvad, haigus levib tavaliselt augustis, poor stand development or seedling collapse are indicative of damping-off, seeds or emerging radicles may be rotted, after emergence, stem, root, and cotyledon may rot at or below the soil, a light brown mycelium may grow over the entire seedling and over large sections of trays, cuttings will form a brown dry canker on the stem at the infection site, the canker enlarges up the stem and down into roots, cuttings wilt and die
