Greenhouse - Pictures of Pythium on Poinsettias

The following are pictures of Pythium, a common root rot organism on Poinsettias.

Darkened roots of Poinsettia cause by Pythium.

Poinsettia wilting caused by Pythium

Photos from the November 13, 2009 edition of the Greenhouse TPM/IPM Bi-Weekly Report from the Central Maryland Research and Education Center, University of Maryland Extension http://www.ipmnet.umd.edu/09Nov13G.pdf