The following quote is from another permies thread.
Dan Boone wrote: I'm in Central Oklahoma where the Trifoliate Orange (poncirus trifoliata) grows really well (if you can get it through the fragile seedling stage) but none of the other cold-hardy citrus and near-citrus as far as I know; we get temps down in the 12F range pretty much every year with single-digit temps ever few years and the low-temp extreme in 25 years being -8.
Dan - I'm thrilled to hear about the poncirus trifoliata. I am looking for potential trees that might grow (well?) in Western OK. I'm particularly looking for drought tolerant, native or naturalized fruit trees. Perhaps persimmon which I know from the Ozarks will grow on the land down in the washes which are perhaps somewhat cooler than the hilltops? Rainfall can be anywhere from extreme drought to low 20s. There appear to be some grapes and perhaps a sand? plum. Sumac bushes grow there if that tells you anything. There is a pond but it dries up in multi-year droughts. Any hardy fruit trees or plants you recommend would be appreciated.
Recommendations that have worked for others in sub-humid areas are appreciated. The land is in zone 7a.
Thanks,
denise