In short, a coffee tree can grow in Oklahoma; however, there are
some stipulations to this question. If you are wanting to grow a
couple of trees then yes it's possible. Just know that it takes at
least 5 years before the plant provides the bean to make your
caffiene coctail. A plantation would not be cost effective since
the Oklahoma winter is too cold. This would either kill the coffee
trees or shock them enough that they would produce a high yield.
The coffee tree wants a temperature range between 65 & 75
degrees and 50 inches of rain distributed throughout the year.
There are two trees to choose from depending upon the quality of
coffee you expect to receive. The Robusta bean, which produces
higher caffeine levels and lower quality taste, (think Folgers,
Maxwell House, and other instants coffees), is grown at lower
altitudes, is a more hearty plant, and is easier to grow. The
Arabica bean, more know in the higher quality coffees like
Starbucks, Tim Horton's, Tully's, and other specialty shops, is
grown at high altitudes usually on the sides of volcanoes and other
mountains in South America, Africa, and Indonesia.
Related Q&A：
Can you grow coffee in Oklahoma？-Oh, well, growing coffee in Oklahoma is a bit of a challenge. You see, coffee plants typically need a specific climate that's quite different from what Oklahoma usually offers. The temperature, humidity, and amount of sunlight in Oklahoma aren't really ideal for coffee cultivation. It's not impossible, but it's highly unlikely to have a successful coffee-growing operation there. So, in a nutshell, no, it's not a common or feasible thing to do.
