Name: Rick Corey Everett WA 98204 (Zone 8a) Sunset Zone 5. Koppen Csb. Eco 2f
I thiink "heirloom" gets used many different ways.
I'll call any stable strain "OP", but it has to be classy, interesting, historical or family-maintained for me to call it an heirloom. But I will settle for a cute story ...