Here's an informative video interview with Matthias Meilland, who explains how the House of Meilland (another one of the world's largest hybridizers) is developing new roses that are adaptive to climate change:
https://www.youtube.com/watch?.... And here's a link to an article about Meilland entitled, "Breeding Roses that are Ready for Climate Change Effects":
https://www.floraldaily.com/ar...
Regarding Austin roses, they come with a 5-year guarantee, so naturally DA Ltd is going to retire less robust roses when they have superior-performing alternatives to replace them. The development of better products and retirement of older ones go hand-in-glove inside any company's inventory decisions. I can't imagine that DA Ltd would use up precious and expensive growing fields to produce older, less robust roses that would cost them refunds and harm their reputation, when they can use those same growing fields to produce superior roses that will satisfy their customers.
There's nothing unique about rose growers creating new hybrids to adapt to climate change. Wine producers are developing new grape hybrids in response to changing conditions:
https://www.smithsonianmag.com.... Coffee growers are also using new hybrids for the same reason:
https://cordis.europa.eu/artic.... And the same is being done with corn hybrids:
https://www.bayer.com/en/news-... The list goes on and on, so why should rose hybridizers be any different?
My point in sharing this is not to try to convince anyone whether climate change is real or not. I haven't shared what I happen to believe about climate change, and there's no reason for me to care what anyone else believes, so I wouldn't spend any time trying to convince anyone of my own beliefs, whatever they might be. Instead, my purpose has been to share information with the Forum's members about the business decisions being made by rose hybridizers that will affect the plants we are able to grow in our gardens. Like me, I doubt the rose growers would care what anyone on this forum believes. The point is, the growers know what THEY believe, and are making inventory decisions in accordance with that.