AHSC logo Allergy and Asthma in the
Southwestern United States
Information for patients with allergy and related problems
in the Southwest

Tucson Pollen Today and Tomorrow - January

Cold in January will prevent most allergic plants from releasing pollen counts this month.  The only plants that release much pollen this month are Rhus lancea and members of the Cupressaceae family, including Juniper and Cypress.  Desert broom (Baccharis) is at the end of its flowering season.  Jojoba (Simmondsia chinensis) is beginning to flower.  Although it produces wind-borne pollen, its allergenicity is unkown.  Cupressaceae pollen, of minor allergenic importance, will continue in the air through February and March.  Cottonwood and Ash should begin to flower near the end of January.  Most of the grasses have stopped flowering, and will not release much pollen until late February.

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 Jan 2013