Hello there. Just thought I would add a comment and upload photos of our Park’s Yellow in commerce as that is into its second season in France lower Cévennes zone 8b ish. It was purchased and planted in November 2022 from Loubert as a bare-root assumed grafted onto Laxa. It is currently the most floriferous Rose variety in our gardens and has produced three new shoots around a metre long and the foliage shows not the slightest sign of disease especially black spot which almost all the varieties have to some degree at this time.

There are eight buds and seven open flowers, only the two principal canes appear to have prickles. The flowers are as described here and the scent is definitely strongly citrus- citrus tea. The flower also ressembles Fée Opale; Margaret Furness mentioned this variety to me in previous correspondence when I incorrectly stated that our Parks’ appeared sans prickles. It is non remontant.

PS I read that Parks discovered the original in China along with Banksiae Lutea in 1823/24 so if that is the case is there not a possibility that it could be found again - rediscovered in and around that same area, if the approximate location is known? Just a thought. Excusing myself in advance and putting protective hat on if that has already been explored previously with no positive outcome.