I desperately need help with my Euphorbia Flanaganii Cristata! I got this plant bare root a few weeks ago, and potted it in a gritty mix like I did with my other succulents. But this one has gotten worse since. The yellow is spreading and the base looks brown (see attached picture)! What can I do to save it?
Thank you for your help.
It looks like your plant has either caught a fugal or viral infection and if it has continued to spread it may just be too infected to save. However if there are still green, uninfected looking parts of the plant you can try cutting them off, dipping the cut area in hydrogen peroxide to disinfect and help seal the wound. Please not that all Euphorbia have nasty milky sap and you do not want to get it in your eyes or on your lips, wear gloves and eye protection when cutting and handling! Let air dry and after a week or so of drying and healing, repot the cuts in fresh soil and a clean pot. You can use rooting hormones if you have it or liquid kelp to help speed up the rooting process or just let it root on its own, though it may take more time. Keep warm and the soil on the dry side the first month.
By the way, here’s a picture of a healthier one growing in Iowa. You have to scroll down for the photos.