Me too, Sunny! An ADR winner gives me a starting point about a rose's ability to survive winter and disease issues. It's kind of like a Good Housekeeping Seal of Approval, or Better Business Bureau top rating. I do keep in mind that all the ADR test gardens are in Germany (to my knowledge), which only limits their winter hardiness to zone 7, but a clean bill of health regarding disease resistance, especially regarding black spot, is zone-less as long as the climate is hot and humid during the growing season as mine is.

I didn't realize she was an ADR rose, thank you! I just planted a tiny one from High Country 😊

Given the number of ADR roses that defoliate here, I officially don't care. I wish it meant something, but it doesn't.

The ADR doesn’t necessarily mean they will do great here either as quick silver defoliates, but I have had good success with several of them.

It is a good start to try plant that at least someone has tried to test them against blackspot which most companies don’t even mention when talking about disease resistance.

I find getting first person recommendations from people with similar blackspot pressure (NJ, SE PA, DC, etc.) works pretty well.