Anyone grow this plant?

This plant is a inter-genera hybrid between Aster and Solidago (goldenrod). The soft, primrose-yellow blooms are shaped like a small daisy flower but held in a goldenrod arrangement which is showy from August to October. Can be prone to powdery mildew. (To 80 cm - 32"). Zone 5.

However, I noticed that Devonian Botanic Garden grows it, so it should be hardy?

Sharon

Here is a link that might be useful: x Solidaster luteus Lemore