Hello,

I posted this problem in the Dahlia forum but thought I would also post here for a wider input. Over the last couple of weeks my Ellen Houston Dahlia started developing yellowing at the edges of the leaves that progresses towards the center. Spider mites was suggested in the Dahlia forum but I do not see evidence of them. No other suggestions have been offered yet. I searched the internet for pictures of similar leaf yellowing and am stumped. It does not seem to be the typical mosaic virus patterning, but maybe it is? It started on a few lower leaves and now I see it at the top as well. Two of my other Dahlias are beginning to show a similar pattern on a few bottom leaves although not as striking. Some of the flowers on the plant are half opening and turning brown right away. If it is a mosaic virus I would like to know so that I can remove the plant immediately to help protect my veggie garden. Thank you in advance for your help.

Kim