Abiotic Tree Stressors: Non-living (abiotic) stressors abound in cities and towns, making it a tough for trees to grow and stay healthy. Penn State Extension.
International Society of Arboriculture (ISA) -Trees are Good. The ISA certifies arborists. You should always verify that your arborist is ISA certified. The ISA also has pamphlets on Best Practices for all things trees.
i-Tree - Use i-Tree to calculate the monetary and environmental benefits of your trees. See how much carbon dioxide and air pollution your trees remove, as well as storm water impacts.
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