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How to Read the Tree Species Selection Guide <br />This Appendix is a matrix detailing the tree species that are suitable for public spaces in Pleasanton. The <br />matrix contains 9 attributes for over 200 tree species. The Tree Species Selection Guide table below <br />contains explanations for some attributes found in this appendix. <br />Table G-1. Tree Species Selection Guide <br />Attribute Explanation <br />Tree <br />size <br />Height at <br />maturity <br />These attributes should be the primary factors considered when finding the right <br />species for a planting location. Before planting a tree, one should consider how <br />large it will grow in the coming decades and choose a species that fits the <br />available space at maturity. <br />Canopy <br />spread at <br />maturity <br />Trunk <br />Diameter <br />Planting <br />Area <br />requirement <br />Water Use Rating As California and the City of Pleasanton continue to cycle through extended <br />periods of drought and extreme heat, tree species that require low amounts of <br />water are likely to be suitable for the City’s environmental conditions. <br />Hardscape <br />Damage Potential <br />The hardscape damage potential is a metric for a species’ known ability to cause <br />damage to sidewalks, streets, curbs, and gutters. <br />Pest and Disease <br />Vulnerability <br />There are an array of arboreal pests and diseases that affect tree health. Certain <br />pests and diseases can have detrimental affects on certain species trees. Notes <br />about pest and disease susceptibility are included for each species in the tree <br />list. <br />Species Recommendations <br />Selecting the appropriate tree species for their designated planting locations can drastically simplify the <br />task of maintaining a sustainable urban forest. Proper attention should be given to making the right species <br />choice because decisions made at this stage have lasting impacts on the health and resiliency of a city’s <br />urban forest. Pleasanton aims to follow the principles of “right tree, right place” when choosing which type <br />of tree to plant and where to plant it. <br />The Recommended Tree Species List below has been developed to assist with the tree selection process <br />and should be referenced whenever trees are being planted in the City of Pleasanton. All species included <br />in this list have been filtered through the following considerations: <br />▪ Tree canopy. The City of Pleasanton aims to maintain and grow the Urban Forest. Therefore, trees <br />that provide large, lush canopies must be included in the tree list and planted wherever feasible. <br />However, some sites don’t have the available space for a large tree to grow... Trees with small- and <br />medium-sized canopies have also been included. <br />▪ Species diversity helps provide resiliency to pest and pathogen infestations. The tree list has been <br />designed to maximize species options for all of the various site scenarios that exist in Pleasanton. <br />The City of Pleasanton intends to maintain species diversity of its inventory such that no one