I looked into Arp rosemary years ago and the cold-hardiness seemed somewhat
overstated. Apparently, it remains a popular choice but is only a little more hardy than the other choices.
In my unheated greenhouse each winter, and covered with a tarp during the coldest weather, is Rosemary Rex. About the only negative thing that I find with that variety is something that I mentioned to
@Pulsegleaner on another thread -- its nice, upright stems do not grow quite sturdy enough for use as skewers. I have little doubt that it would develop stronger branches in a longer growing season. After many years, the plant was replaced in 2020, same variety

.
I almost thought to not respond after reading
@Dahlia 's and
@baymule 's comments. But, while scrolling back to the top, an IHOP ad showed up in the right column. A "minion" and kids eat free. Happy faces ... dances with pancakes!
Okay,
that's appealing

. Why in Heaven's name do some people come up with unappealing identifiers for varieties?? I will not mention some that are even worse - it's breakfast time. Maybe pancakes!
Arp? Okay, I had a nice meal, maybe ate too much. Leave the restaurant, sit down behind the wheel for the drive home.
ARP ! Look over at DW and in the mirror at the guests in the back seat. "OH, Excuse me!"

Steve