By Teo Spengler Cashew nut trees (Anacardium occidentale) are native to Brazil and grow best in tropical climates. If you want to grow cashew nut trees, keep in mind that it will take two to three years from the time you plant until the time you harvest nuts. Read on for more information about how to grow cashews and other cashew nut information. How to Grow Cashews You can start growing cashew nuts if you live in the tropics, whether the climate is wet or dry. Ideally, your temperature should not drop below 50 degrees Fahrenheit (10 C.) or rise above 105 degrees F. (40 C.). It is also possible to grow the trees in any frost-free areas. In this temperature range, growing cashew nut trees is easy. In fact, with a little irrigation, they grow like weeds. The trees are drought resistant, and they can thrive on marginal soils.