|Allergy and Asthma
Southwestern United States
||Information for patients with allergy and related
in the Southwest
Tucson Pollen Today and Tomorrow - December
Grasses have been flowering for several months. The noxious weeds Pennisetum ciliare (Buffel Grass) and Pennisetum setaceum (Fountain Grass) have matured and are continuing to flower. Bermuda grass (Cynodon dactylon), established in alleys and roadsides, is dying off with the cool weather and continues to flower only where it is irrigated. Grass pollen is expected to decrease in December and January.
Baccharis (Desert Broom) has been
releasing pollen from the male flowers, and the tufted seeds maturing in the female
flowers will fly in the wind this month. Mold counts are expected to decrease this
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
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