Pollen Collection Date - Feb 15th, 2017
TREE
Moderate

GRASS
Low

WEED
Low

Update Feb 15th, 2017: 

Elm pollen has arrived one week ahead of schedule (pleas see photo below). Elm pollen is still relatively low but regional pockets of high elm pollen will exist on dry and windy days. Elm pollen will continue to climb over the next 2-3 weeks. Maple is also starting to release pollen. The recent moisture has also resulted in continued outdoor mold, primarily cladosporium and alternaria. As the stormy weather moves in this weekend, pollen levels should decrease. 

We picked this small Siberian Elm branch near the allergy clinic in Grand Junction on Feb 15th, 2017. Small buds releasing pollen can be appreciated. Visible pollen could be seen with flicking of the branch. 

On the left is chenopod weed pollen from our Sep 8th sample, which is one of the Grand Valley's worst fall pollens. The chenopod pollens include Kochia, Russian Thistle, Lambs Quarter and Careless Weed. These share a high degree of allergic cross reactivity (ie - if you're allergic to one, you're likely allergic to the other) and look nearly identical under the microscope. 

On the right is sage pollen from our Sep 1st sample. Sage is the Grand Valley's most robust fall weed pollen, often pollinating well into November. 

On the left is ragweed pollen with mold in the background from our July 28th sample. Unlike most other places in the United States, the Grand Valley grows relatively little ragweed. Our most significant pollens this time of year are the Chenopod family of weed pollens, including Kochia, Russian Thistle and Lamb's Quarter. 

(Above) Grass pollen surrounded by various types of mold spores from our June 24th sample. 

Here you can see local grass pollen in action. This video was captured May 30th, 2016, from the bank of the Colorado River near downtown Grand Junction. 

Oak pollen from May 19th. This likely originated from scrub oak, blowing all of the way from the Grand Mesa or Uncompahgre Plateau to downtown Grand Junction.

Some of the first grass pollen of the year that showed up May 3rd, 2016. Earlier than we had expected!
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