In flower in June-July, this rosebush hates the rain but demands a lot of water during the warm summers. Certain years, it is a martyr of the powdery mildew

The foliage and growth are similar to that of a Portland Rose, with the typical Portland widely-spaced leaflets. It forms a medium sized shrub which is robust and free flowering

Griselis will prefer the semi shade to show its particulare colour : pearl grey.