Dahlias look wilted in the sun ?
I noticed this last year from a few of my Dahlias, but this year the leaves all look "wilted" during the heat of the day. They are planted in good sandy soil, topped with a few inches of composted cow manure, and the soil is plenty damp underneath. As soon as the sun passes they spring back to a livelier appearance.
Is this common? Its not even June yet, so the real heat of summer is yet to come. I started them in pots inside this year, but they have been outside for over two weeks now, so I don't think it is about adjusting to the outdoor conditions.
Should I be concerned?