HELP! Material or screening to stop pollen.

[shaua]

Greetings!

Long time reader, first time writer.
I am an intermediate level grower with a problem.
My outdoor plants have been getting pollinated from an unknown source so I am trying to design a small greenhouse.
I live in Canada so I can grow without issue.
I think a small greenhouse would just be too hot for the plants but I am not sure how to ventilate it without pollen getting in.
I would like to put small windows in the greenhouse with some kind of screening or material that lets air through but not pollen.
Anyone with any ideas or knowledge of a material to use, please let me know.

Thanks all.
josh

[Farmall]

You might consider replacing a panel in a window or tent with a hepa filter or even just a good a/c filter which might be more readily available in a wide range of sizes

[SoOrbudgal]

Now that's a great idea Farmall

[Farmall]

Thanks... Catholic school thinking 😂

[shaua]

Good idea!
Thanks!

[Jordann]

If you could draw your air in through a dustop furnace filter should be good. They make them for people with allergies should stop all pollen.

[shaua]

Thanks guys!
I am going to see what I can come up with.

[Farmall]

They make a/c filters with a rating called MERV.... the higher the number like 11,12,13 etc....the finer particulate filtration it will provide ...too high a number and you’ll need a greater size fan to pull air thru