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| The gradual process by which a given tree adapts to changes in its environment. This usually involves physiological or morphological changes. For example, some trees [[ ]] to shade by developing larger, thinner leaves. |
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| A species' genetic ability to adjust to different environmental conditions. For example, red maples (Acer rubrum) tend to grow well across a large range of environments, while palms will grow well only in warm environments |
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| The factors driving decisions about a tree planting - including functional goals for the tree (shade, screening, wildlife habitat, etc) as well as site constraints & client preferences. |
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| A natural process where the bark of a tree peels away in flakes, scales, or layers, revealing new bark underneath. Strawberry trees & madrone trees both exhibit this characteristic. |
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| The functions (engineering, architectural, safety, aesthetic, ecological, etc) a tree is expected to serve in the landscape. For example: hiding an unsightly building OR providing shade to a patio. |
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| The speed at which a tree grows and matures. |
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| The growth form of a tree. |
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| A plant's ability to survive low temperatures. |
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| Non-native species to a given region/ecosystem. In an area as a result of deliberate or accidental human activities. |
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| The climate of a very small or restricted area, especially when this differs from the climate of the surrounding area. Can be affected by buildings, topography, pavements, and other surroundings. |
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| A species that is indigenous to a given region or ecosystem. |
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| An introduced species that has established itself in a new environment and is able to regenerate (reproduce) and spread on its own. |
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| If << >> is high, a plant is less (or not at all) susceptible to a given pest or pathogen. |
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| The evaluation of relevant existing site conditions to determine the factors that will affect plant selection. Relevant site conditions/considerations include: growing space, water availability & drainage, soil texture & pH, light levels, weather & microclimate, and site use or function. |
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Definition
| All of the factors an arborist will take into account during a site analysis: growing space, water availability & drainage, soil texture & pH, light levels, weather & microclimate, and site use or function. |
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| [Pest or Pathogen] Susceptibility |
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| The degree to which a plant is or is not affected by a pest or pathogen. |
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