What the fluff? Montreal’s ‘summer snow’ explained, and no, it’s not pollen

Many could have seen white fluff floating within the air and even piled up on the bottom over the past week or so throughout Montreal, however what precisely is it? Properly, consultants say, regardless of what many assume, it’s not pollen in any respect.

“It’s seeds really,” defined Dr. Alain Paquette, biology professor at UQAM. “So it’s not pollen.”

Merely put, when the male flower of a poplar tree pollinates the feminine flower, it produces seeds wrapped in fluffy white fibers –the “summer time snow” many Montrealers have seen within the air.

“There’s a small child tree in there able to germinate and produce a really giant tree,” stated Paquette. “It’s really one of many largest bushes in North America.”

The white stuff comes from feminine poplar bushes, which is then carried away by the wind.

These seeds are innocent and never an allergen, Paquette defined.

As for pollen, he added that it’s microscopic; and due to this, it may possibly get into one’s lungs, frightening allergic reactions like bronchial asthma.

Dr. Alain Paquette in his UQAM workplace in Montreal displaying units of pollen slides on June 18, 2026. (Pamela Pagano, CityNews)

Aerobiology Analysis Laboratories, primarily based in Ottawa, gives aeroallergen ranges throughout Canada, and stated that pollen ranges in Montreal are increased than ordinary however “not apocalyptic.” That it’s beginning to tail off now.

“When you recognize (pollen) is within the air, you’ll be able to take precautions to reduce its results in your well being,” stated Daniel Coates, Director of Aerobiology Analysis Laboratories. “Like put on sun shades once you’re outdoors as a result of it helps maintain it out of your eyes.”

“Should you’re gardening, put on a masks that basically helps maintain it out of your air passages,” he added. “Don’t let pets into your mattress as a result of they carry pollen, a variety of it.”

Slides on June 18, 2026, showcasing how pollen is microscopic, due to this fact not the white fluff Montrealers have been seeing within the air these days. (Pamela Pagano, CityNews)

From oak pollen to birch and pine, it’s the late begin to the season that prompted the next focus of pollen within the air. Having differing kinds mixing collectively in a shorter interval.

As for the seeds that one may really see floating round –- properly, they’ve received huge plans.

“They traveled far with the wind, and now the remainder of them are settled within the floor or underground by the water,” stated Paquette. “And fairly quickly they’ll germinate and produce extra bushes.”

Seeds from feminine poplar bushes seen on a sidewalk in Montreal on June 16, 2026. (Pamela Pagano, CityNews)
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