| pH Levels |  | pH values can be between 1 and 14. | 
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                        | Salt Tolerance |  | Salt Tolerance can affect a tree by the salt in the soil or spray on the vegetation | 
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                        | Shade Tolerance |  | Shade Tolerance can affect trees in full sun or in understory of a canopy | 
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                        | Drought Tolerance |  | Drought Tolerance can affect short term dry periods or long historic periods | 
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                        | Allelopathy |  | Allelopathy is a biological phenomenon by which an organism produces one or more biochemicals that influence the germination, growth, survival, and reproduction of other organisms. | 
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