Tucson Pollen Today and Tomorrow - February

Several deciduous trees will begin to flower this month.   Fraxinus (Ash) and Cottonwood are now beginning to flower, and Rhus lancea  is continuing to flower.   Members of the Cupressaceae including Juniper and Cypress pollen will continue in the air through February and March.  This month flowers will begin to form on Ambrosia ambrosiodes (canyon ragweed) and Ambrosia deltoidea (triangle leaf bursage, rabbit bush).  Most of the grasses will not release much pollen until late February.  Eucalyptus and Pine are  beginning at this time, but neither of these are important allergens.

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 of any particular airborne pollen species in the air are usually days or weeks after the onset 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 1-30-2008