Oklahoma lies in USDA plant hardiness Zones 6 and 7, with winter lows ranging from minus-10 degrees to 10 degrees Fahrenheit. Red cattley guava, a hardier plant than common guava, survives to 22 degrees Fahrenheit. Neither cattley nor common guava is suitable for Oklahoma.
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A freelance writer, Judy Wolfe has owned Prose for the Pros, a freelance writing business, since 2006. She's been an inveterate traveler since 1961 and draws on her travel experiences to provide articles for such websites as Chincoteague Island Vacations and Berlin Dude. Wolfe holds a Bachelor of Arts in literature from California State University at Pomona.