From the damage that I have seen this season. These borers have an appetite for light colored dahlias. They have devastated my whites, my Yellows, and blush colored dahlias. Not to say that my darker pigmented dahlias didn't get some damage. However, they weren't damaged as the as the former. I guess they don't like the taste of the darker ones. Not to say the darker ones will be safe, as my light colored ones get removed from their menu, and they will eventually go after the darker ones too.
Have you noticed that the vine bores attack a certain color more than others?
From the damage that I have seen this season. These borers have an appetite for light colored dahlias. They have devastated my whites, my Yellows, and blush colored dahlias. Not to say that my darker pigmented dahlias didn't get some damage. However, they weren't damaged as the as the former. I guess they don't like the taste of the darker ones. Not to say the darker ones will be safe, as my light colored ones get removed from their menu, and they will eventually go after the darker ones too.