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Southwestern United States
Information for patients with allergy and related problems
in the Southwest

Tucson Pollen Today and Tomorrow - March

Weeks 1 & 2:  Allergenic deciduous trees including  CottonwoodFraxinus (Ash) and fruitless Mulberry trees flower this month.  Members of the Cupressaceae including Juniper and Cypress pollen will continue in the air through March.  Ambrosia ambrosiodes (canyon ragweed), inhibited by recent freezes, is growing again and forming flowers. A few of the  Ambrosia deltoidea (triangle leaf bursage, rabbit bush) plants are beginning to form flowers, and both of these two ragweed species will be releasing pollen later this month.  Pine trees are releasing relatively non-allergenic pollen.  Most of the grasses are growing but not flowering extensively yet.

Note:  This information is based on ongoing observation of flowering allergenic plants in the Tucson metropolitan area, and not on pollen counts.   Appearance and persistence in the air of any particular species of airborne pollen are expected to be later than the onset and duration of flowering of the plant of origin.                                                                     Back


Disclaimer:   This site is for educational purposes only.  Any information that you have found in this web site is not intended to replace medical care or advice given to you by your own physicians. You should consider consulting your local medical library and other web sites for additional information. 

Comments and suggestions welcome!                                           

Email: schumach@u.arizona.edu
Content Owner:  Michael J. Schumacher, MB, FRACP, The University of Arizona
Updated 2-27-2013