Posted on 6 September 202024 October 2020 by Christine QuistPhytopthora http://www.greenhouse.cornell.edu/pests/gallery/poinphytoph.htm https://www.pthorticulture.com/en/training-center/poinsettias-root-diseases-how-to-prevent-and-solve/ https://www.plantmanagementnetwork.org/pub/php/review/xmasflower/