Planting Trees in the Heat How to Help Young Trees Survive Summer By Ariel Slick
Summer is a tough time to plant a new tree. It is an uphill battle — but if done correctly, it can establish your tree be- fore the vigorous burst of root growth that comes with fall. Like people, trees are vulnerable to the harsh, hot weath- er of summer. If you are planting during this season, pay close attention to the following: regional climate, watering depth and frequency, soil composition, and your use of mulch and fertilizer. Planting in the summertime is a lot like preparing for summer camp — you must know the location and forecast to plan accordingly. The climate of your region will determine the challenges your tree must overcome in order to grow strong and healthy. Proper planning begins with species selection. The more suited the tree is to a designated climate zone and the typical summer temperatures, the bet- ter its chances of survival. The USDA
“For trees planted within the last year or two, consider using shade cloth during extreme heat days,” said Petar
Hardiness Zones and Köppen Climate Classifications are two major systems that can help you assess how well a tree will survive in your area. While both systems offer crucial infor- mation, the USDA system reflects the range of extreme temperatures — hot and cold — that an area experiences. Meanwhile, Köppen classifications focus more on long-term climate pat- terns, particularly the intensity of sum- mer heat. Used together, they offer a fuller picture of what conditions your tree will need to endure — and what care it may require as the seasons shift. Even with this guidance, close monitor- ing is key. Urban microclimates — such as neighborhoods near buildings and pavement — can be as much as 10 de- grees warmer than surrounding rural areas. Data specific to your yard is of- ten more useful than general weather patterns.
Regardless of region, your young tree needs to focus its first few years on establishing a deep and resilient root system.
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