Name: Rick Corey Everett WA 98204 (Zone 8a) Sunset Zone 5. Koppen Csb. Eco 2f
I asked Baker Creek, it can't hurt.
BTW, here it is in the ATP Plant database. I'm going to add it to my "Want" list, just in case anyone who has access stumbles onto the entry:
ATP BB Code: Watermelon (Citrullus lanatus 'Schochler')