christmas trees

Many of us are getting into the spirit of the upcoming holiday season. This festive mood includes twinkling lights, scented candles, artificial decorations and, of course, Christmas trees and greens. According to the National Christmas Tree Association, every year, approximately 25-30 million real Christmas trees are sold in the United States. Apart from this, millions of synthetic trees are sold every year. Many of these trees are prepared several weeks ahead of the holidays and pass through various environments before finding a home.

Unfortunately, in energy-tight buildings, it creates favorable conditions for microbial growth and may off-gas obnoxious substances. Although these trees may not produce pollen grains during the winter season, they may harbor pollen grains (due to contact with grass, ragweed, etc.) and microbes such as bacteria, mold, etc. that can multiply rapidly and disperse in our surroundings. A report accounts that about 7% of the general population are allergy sufferers from “Christmas tree allergies.”

The American Academy of Allergy Asthma & Immunology advise that some trees may also be home to microscopic mold spores that trigger asthma or allergies, causing symptoms like sneezing or an itchy nose. These trees may emit fragrances that can be irritating.

If it is decided to decorate a natural tree for the holiday season, one could hose down the tree before bringing it indoors in order to limit the amount of pollen grains and mold spores. In the case an artificial tree is used, it has been encouraged that the tree is wiped down prior to decorating to eliminate the dust and debris accumulated during storage.

Other potential holiday allergens to consider include scented candles and incense. The holiday season is iconic for the warm, cozy and inviting aromas. However, artificial scents can cause irritation and reactions to individuals who are sensitive. According to the EPA, some candles can emit numerous different chemicals including, but not limited to, acetaldehyde, formaldehyde, acrolein, and polyaromatic hydrocarbons (PAHs).

To avoid the challenges posed by microbes and volatile compounds released by Christmas trees and other décor, people can consider easy, Do-It-Yourself tests. Laboratory results of the findings are important in order to help identify potential entities which may be significant from an allergy point of view. If needed, advanced investigations can be undertaken or a simple avoidance of the suspected allergens can prove beneficial for those who are susceptible.

A number of Indoor Air Quality tests, from Do-It-Yourself screen tests to detailed environmental diagnostic evaluations are available to collect and identify environmental allergens and their potential sources. Contact Dr. Rajiv Sahay, CIAQP, FIAS at (800) 422-7873, Ext. 304 for additional information.

About Pure Air Control Services
Pure Air Control Services, Inc. was established in 1984 as a small, mechanical, contracting firm and has since set the industry standard for indoor environmental quality diagnosis, environmental laboratory and remediation. Pure Air Control Services has serviced more than 600 million square feet of indoor environments in over 10,000 facilities.

Pure Air’s nationally performed services include: Building Sciences Evaluation; Building Health Check; a CDC ELITE Environmental Microbiology Laboratory; Environmental Project Management; HVAC New Life Restoration and PURE-Steam Coil Cleaning/Mold Remediation Services, among other indoor environmental services.

Environmental Diagnostics Laboratory (EDLab):
The Environmental Diagnostics Laboratory (EDLab) (established in 1992) at Pure Air Control Services (PACS) is an environmental lab offering complete and comprehensive indoor environmental microbiology laboratory services. They include: microbiology, aerobiology, chemistry, allergen assays and microscopy designed to meet all your indoor air needs. EDLab supports IAQ investigations by assisting with strategic sampling plan development and supplying media collection equipment while performing a wide range of environmental analyses.

For more information on EDLab at Pure Air Services, Inc. please contact Dr. Rajiv Sahay, CIAQP, FIAS, at (800) 422-7873 x 304, or visit