Microclimates. Small localized climatic conditions that may be warmer, colder, dryer, wetter, windier or calmer than other areas of the site.
Mulch. A cover put over soil to reduce water loss to evaporation, consisting of organic material including composted leaves or wood chips or inorganic materials such as gravel or rocks
Multistory planting. A combination of “overstory” trees, “midstory” shrubs and “understory” plants placed within the same planting area to create a diverse “multistory” structure providing mutual benefits such as shading, soil enrichment and habitat.
Native edible trees. Edible trees that grow naturally in the wildlands of Arizona without the need for human care.
Nonnative edible trees. Edible trees that have been introduced to Arizona from other areas of the world.
Passive water harvesting. Collection and infiltration of rainfall and water runoff directly into the ground, often in depressions shaped in the soil around trees.
Plugging. A hole that forms in the skin of a fruit because the stem pulls away when the fruit is picked.
Pollination. The transfer of pollen from the male part of a flower (stamen) to the female part of a flower (pistil) either in the same flower, or in another flower, so the plant produces fruits, nuts, seeds or pods.
Potable water. Water of suitable quality for drinking and cooking.
Propagation. The process of creating new trees from seeds, cuttings, grafting, layering and other techniques.
Rain. For purposes of this Guide, “rain” is used as a general term for precipitation, including rainfall, snowfall, sleet and other forms of precipitation.
Right-of-way. A narrow strip of publically owned land located adjacent to streets, where sidewalks are sometimes located. If it is legally permissible, stormwater runoff from the street could be diverted through curb cuts to support edible trees planted on these right-of-ways.
Root flare. The area at the base of a tree’s trunk where a tree’s roots begin to grow underground.
Runoff. Rainfall and other forms of precipitation that drain off a structure or landscape.
Tree cultivar. A variety of tree that originated or has persisted in cultivation by people, sometimes through selective breeding.
Tree variety. Taxonomic subdivisions of tree species with differing characteristics.
LEAF is under the fiduciary stewardship of the Arizona Community Tree Council, a 501(c)3 non-profit organization.
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This website and other LEAF Network products shown here was prepared under the Diverse Urban Forest grant, WCG 14-501, administered by the Arizona Community Tree Council. Funds for this project were provided by the Urban and Community Forestry Financial Assistance Program administered through Arizona Department of Forestry and Fire Management – Urban and Community Forestry Program and the U.S. Department of Agriculture (USDA) Forest Service. In accordance with Federal law and USDA policy, this institution is prohibited from discriminating on the basis of race, color, national origin, sex, age, or disability (Not all prohibited basis applies to all programs). To file a complaint of discrimination, write USDA, director, Office of Civil Rights, Room 326-W, Whitten Building, 1400 Independence Avenue, SW, Washington, DC 20250-9410 or call (202) 720-5964 (voice and TDD). USDA is an equal opportunity provider and employer.