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Strengthening our Community Tree Canopy Through Education Module #1: Tree Growth and Biology in an Urban Environment Laura Sanagorski, Environmental Horticulture Extension Faculty. Strengthening Our Community Tree Canopy 2012 Urban Forestry Series
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Strengthening our Community Tree Canopy Through Education Module #1: Tree Growth and Biology in an Urban Environment Laura Sanagorski,Environmental Horticulture Extension Faculty
Strengthening Our Community Tree Canopy 2012 Urban Forestry Series This series is a part of a project titled “Strengthening Our Community Tree Canopy Through Education”. This project is made possible by a grant through the 2011 National Urban and Community Forestry Grant Program and the Florida Department of Agriculture and Consumer Services, and the Florida Forest Service.
Biology of Trees Why do we care? • Helps us to: • Understand that trees grow differently in a • natural vs. urban setting • Understand how trees react to pruning cuts • Understand how a planting environment • can affect structural integrity and thus • anticipate pruning needs • Understand how to explain to customers • why pruning is necessary & what to expect
Tree Growth in Nature Photo: Laura Sanagorski
Tree Growth in Urban Landscape Photo: Stephen Davis
Trees with codominant trunks (also referred to as codominant stems / leaders) Codominant trunk – two or more main trunks that are about the same diameter & emerge from approximately the same location on the trunk. Photos: UF Laura Sanagorski
Included Bark Little or no connective wood.
BARK PHLOEM CAMBIUM XYLEM International Society of Arboriculture, International Society of Arboriculture, Bugwood.org
CAMBIUM PHLOEM XYLEM BARK International Society of Arboriculture, International Society of Arboriculture, Bugwood.org
APICAL MERISTEM ZONE OF STEM ELONGATION TERMINAL BUD SCALE SCARS LATERAL BUD LATERAL SHOOT International Society of Arboriculture, International Society of Arboriculture, Bugwood.org
Branch Collar Photo: Stephen Davis
Branch Union Branch Attachment: functions as screw Photo: Laura Sanagorski
Strengthening our Community Tree Canopy Through Education Module #1: Tree Growth and Biology in an Urban Environment Laura Sanagorski,Environmental Horticulture Extension Faculty