Avocados are native to southern Mexico and grow serious in subtropic zones . They opt a semi - humid climate with warm weather . The most cold - hardy varieties can withstand temperatures of about 25 degrees F. Avocados are grow commercially in the Rio Grande Valley area of Texas and some variety do well in fundamental Texas . The northerly Texas clime is too cold for outside maturation of avocado pear trees .
Cold Tolerance of Avocados
Mexican alligator pear tune are the most insensate broad , generally defy temperature to 25 degree F. The Mexicola miscellany is the most cold - hardy form . It loses its leaves at 20 degree F and the body die at 17 degrees F. The avocado trees that do best in Texas are Mexican varieties grafted onto West Native American rootstock . The West Amerind sort have high saltiness permissiveness and good disease resistance .
Cold Protection
During the first two twelvemonth , avocado pear trees are very tender and susceptible to cold weather . Texas Persea Americana want extra tending during this time . When a halt is expected , mound garden soil around the trunk for additional protection . Water the Sir Herbert Beerbohm Tree thoroughly and cover it with a mantle or quilt . During austere freezes , total a string of brightness or a belittled heater under the screen . fledged trees are more cold resistant and do not need this extra auspices .
Site Selection
Because of their susceptibleness to cold , plant life avocado in the tender location in the residential landscape painting , usually the south or southeast side of the theatre . Allow plenty of clearance , at least 8 to 10 foundation away from the theatre . Avocado trees raise quite large . Avocado tree diagram will spring up in most soils found in southern Texas . The most of import cistron is good drainage . In areas with poor drainage , create a mound of stain and constitute the tree on the mound .
Recommended Varieties
Urban Harvest , a Houston charitable governing body that supports a web of urban gardens , commend a identification number of avocado varieties suitable for get in south and central Texas . Opal , Wilma and Fantastic avocado are declamatory , insensate - hardy Mexican varieties with good tang and color . Joey and Poncho avocados get medium - sized yield with good smack . Texas A&M AgriLife Extension also recommend Opal , Wilma and Pryor .
Commercial Varieties
In the Rio Grande Valley , Lulu is grown commercially . Lulu is cold - Thomas Hardy to 27 degrees F and tolerant of the soil salt vulgar in south Texas .
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