Answer: Mexican varieties of avocado will grow in your area (you're very close to Nogales, a premier avocado growing region). Mexican varieties are hardy to about 18F. Young trees need frost protection: Construct an overhead frame and drape sheets, towels, or other fabric over the frame to make a tent if the temperature ever dips that low. As the tree matures it will be less susceptible to frost damage. Topa Topa, Puebla, Murrieta Green, Mexicola, Mexicola Grande, or Fuerte are all good varieties to grow in your landscape.
Q&A Library Searching Tips