Viewing post #1353571 by SteveM
After 13 years online, Cubits.org is scheduled to be shut down. Please make sure you have the contact information for all your friends, and that you download whatever content you want from this site.
You are viewing a single post made by SteveM in the thread called Color as are faded?.
|
|||
I agree, dahlias need a certain amount of sunlight in order for the pigments to express. But, 30-40% shade seems sufficient (here) for full anthocyanin expression while, at the same time, keeping the reds and dark reds from fading. I also get a better blush on the whites under shade compared to full sun (when the lavender washes out). Likely, somewhere on the scale there is a point where too much sun blockage will restrict antho expression. Is it 50%, 70%, 90% shade? I don't know if anyone has done a study to find out. Maybe a good experiment for Staci.  As far as plants 'stretching' under shade cloth, I do get a height increase of about a foot on varieties grown under shade cloth. Since I am after long stem this is actually a desirable trait. Dahlias grown further north would likely stretch more, considering the longer day length. |
« Return to the thread "Color as are faded?"
« Return to Discussion of Colors, Forms or Varieties forum
« Return to the Growing Dahlias: cubit homepage
