The University of Arizona Cooperative Extension (reg)

  About the Journal



  This Issue:
    Calendar of Events
    Things to Expect & Do
    Trees for Special Areas
    A Date with History
    Annuals in the
    Buzz; A Book Review
    Velvet Mesquite
    Computer Corner
    Ask a Master Gardener
    How Herbicides Work
    The Unappreciated
          Smell of Rain
    East Valley Escape
    Word Wise
    Garden Insects of
          North America

    Is Your Gardening
          Library Complete
    Citrus Clinics
The Master Gardener Journal

W O R D   W I S E

Definition of Terms Used in This Issue
by Candice Sherrill, Master Gardener

alkaline (Annuals) — with a pH level above 7. Alkaline soils are basic rather than acidic, and considered "sweet."

annual (Annuals) — a plant that germinates from seed, flowers, sets seed, and dies in the same year, compared to a biennial (two seasons) or perennial (three or more seasons) plant.

antioxidant (Underappreciated Smell of Rain) — a substance that inhibits the destructive effects of oxidation, for example in the body or in foodstuffs and plastics.

arboretum (A Date with History) — a place where trees, shrubs and herbaceous plants are cultivated for scientific or educational purposes.

caliche (Underappreciated Smell of Rain) — a crust of calcium carbonate formed on stony soils of arid regions.

evergreen (Underappreciated Smell of Rain) — having green leaves through the winter; not deciduous.

foliar (Annuals) — pertaining to the leaves or foliage of plants.

heartwood (Velvet Mesquite) — the harder, innermost, and usually darker-colored wood comprising the interior of a tree trunk or branch.

lateral root (Underappreciated Smell of Rain) — a secondary root growing from a dominant or "parent" root.

organic fertilizer (Annuals) — a fertilizer whose molecules contain carbon and hydrogen atoms.

perennial (Annuals) — a plant whose life cycle lasts for three or more seasons; lasting year after year.

resinous (Underappreciated Smell of Rain) — describing organic substances formed in plant secretions, which are usually transparent or translucent, flammable, and insoluble in water.

sapwood (Velvet Mesquite) — the softer, newer, usually lighter-colored wood between the inner bark of a tree and the heartwood; the wood that actively transports water.

scarify (Velvet Mesquite) — to cut or soften the outer layer of a hard seed to hasten germination.

taproot (Underappreciated Smell of Rain) — the main root of a plant, having a single, dominant axis.

transpiration (Underappreciated Smell of Rain) — the act of giving off or exuding water vapor from a living body through a membrane or pores, especially in leaves.

tripartite (A Date with History) — divided into or composed of three parts.

Maricopa County Master Gardener Volunteer Information
Last Updated November 21, 2004
Author: Lucy K. Bradley, Extension Agent Urban Horticulture, University of Arizona Cooperative Extension, Maricopa County
© 1997 The University of Arizona, College of Agriculture and Life Sciences, Cooperative Extension in Maricopa County
Comments to 4341 E. Broadway Road, Phoenix, AZ 85040,
Voice: (602) 470-8086 ext. 301, Fax (602) 470-8092