About David Austen's hybrid albas.

The British website for David Austen Roses identifies the subgroup for each of the roses being offered. This information is not found on the American website. There is an old rose group, a Leander group, an English musk group and the following hybrid albas.

"The Lady's Blush'
'Scarborough Fair'
'Windflower'
'Sir John Bentjeman'
'Royal Jubilee'

I am supposing that that group in particular might grow and bloom well where I live in upstate NY, USDA zone 5.

Might anyone here have any experience of information to share about those cultivars? I am particularly interested in 'Windflower' and 'Royal Jubilee'

I have also seen the roses 'Cordelia', "Corvedale', and 'The Alexandra Rose' referred to as "like albas', or having alba ancestry.

Alba hybrids do seem to inhierit the hardiness of the alba parent, as for example, 'Mme. Plantier' and 'Mme. Legras de St. Germain' which are generally believed to be alba x noisette hybrids, but are perfectly hardy to at least zone 5.

The DA roses I have now, 'St. Cecelia', and 'Mary Rose' are "hardy" in the sense that they grow back each year, but they are puny plants which bloom very little. Some of my delicate 50s floribundas have better rebloom.