Step 1
Trees , shrubs and herbaceous perennial worthy for landscapes in the Panhandle must brook average annual minimal temperatures in the 0 to minus 10 degrees Fahrenheit mountain range . Using U.S. Department of Agriculture plant hardiness zone designations , that correlates to geographical zone 6a , 6b and 7a . USDA geographical zone provide guidance for selection of plant materials only based on survival of winter frigidity . The front of soil wet or the effects of dry out wind across the Panhandle can still vote down plant even though planted in the appropriate USDA geographical zone .
County Insight
For precise information on clime , soil and USDA zone ratings in the Panhandle , contact your local accommodative extension authority . Horticultural agents disseminate information from Texas A&M University to inform house physician with up - to - date data point and testimonial on horticultural topic . The far northwestern counties , including the town of Dalhart , are turn up in the inhuman USDA zone 6a . In the extreme southeastern part of the Panhandle , around Happy and Clarendon , it ’s slightly warm and place USDA zone 7a . Much of the central parts , let in Amarillo , remain in zone 6b . If you choose to use Sunset climate geographical zone designations , the integral Panhandle lies in zona 10 — the high desert of Texas .
Step 2
The Growing Season
The grow time of year span the time between the last spring hoarfrost and the first frost of autumn . Knowing the frost dates in your part of the Panhandle helps you schedule planting yearly blossom and vegetable crops based on their abilities to survive icing . The last spring frost come about around April 15 in uttermost southeastern county , about April 21 to 30 in central areas and by May 10 in the far northwestern United States . In fall , the first defeat fall frost befall in previous October in the northwest and progresses far south-east by November 15 .
Annual Crop Types
Grow cool - season flower and vegetable harvest in springiness and fall in the Panhandle when temperature stray between 25 and 70 F. Pansies , shekels , lolly , Spinacia oleracea , pea plant and cabbage grow best in the cooler months and tolerate freeze . Conversely , once frost no longer hap , grow heat - loving crops such as Madagascar periwinkle , moss rise , pentas , tomato , watermelon , squash , corn and peppers . Your local cooperative file name extension agency will cater specific information on cultivar names or precise planting time desirable to your location .
References
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