Mike, 'Isolde' was registered in 1981, when the AHS had not yet created a category for polys, so there's no way of knowing the poly percentage without polling those who grow it.
Gardener was the label imprinted on me when the souls were handed out and so be it. --Margaret Roach (Thank you, Sharon!) Notes from the Garden: Articles of interest on all aspects of gardening Cottage-in-the-Meadow Gardens: Come on in and take the tour! Check out the photos!