I just visited Helen yesterday near San Jose . She has an amazing collection 1000 different varieties of roses in a 6000 sq ft lot, (and she is super good at rooting more).. `Her part of they bay is super restrictive on water, so she lets the roses go dormant in summer even though her summers have terrific weather. So expensive land and water restrictions might be practical considerations despite the excellent weather. I think she said she gets some fungal disease on certain varieties, i’m sure nothing like the east coast or south. Miyabi below at her house.

KJ

I might get a tiny bit of mildew in spring and rust in fall on certain varieites, but it goes away by itself, so I have never sprayed. Many of my neighbors grow roses in their front yard, they look healthy the whole growing season despite getting no better care than a holly or boxwood hedge! I think those neighbors would think i was some strange alien if I wanted to discuss rose fungal disease control.

I made a video of Outragious when it was a young plant. It’s far more impressive this year and has become one of my best varieties