Can I Use Mirrors As Reflectors in My Growroom?

By
Danny Danko
Dear Dan,
I have a question that is short and simple—Has anyone done any experiments as far as lining a grow room with mirrors to see the results that you know of, and if so, how well did it go? — Alex R.

Dear Alex,

It’s not recommended to use mirrors as reflectors in your growroom. They reflect infrared light, which is also heat and can create hot spots that will burn your plants. Some people use mylar or tin foil, but I don’t advise using them because they can provide a safe place for insects to hide and from which they can attack your plants. They can also crinkle or crease, decreasing their effectiveness. It’s much easier and better to just paint the walls of your space with flat white latex paint.

Danny Danko

Danny Danko is a writer, photographer and the Senior Cultivation Editor of High Times magazine. He has selected High Times’ annual Top 10 Strains of the Year since 2005 and is also the creator and founder of the High Times Seed Bank Hall of Fame, author of The Official High Times Field Guide to Marijuana Strains and the forthcoming book Cannabis: A Beginner's Guide to Growing Marijuana. He hosts the podcast High Times presents "Free Weed from Danny Danko."

View Comments

  • Hey me and my brother are using 2 long mirrors in the middle of 6 plants. The mirrors Are laying on the ground in between the pots. So to make iit more understanding I’m running hrdoponics 3 plants on one side 3 plants on the other side. It seems to be pulling the Fan leaves down to the Mirror so there getting light but I don’t know if it’s a good thing that it’s almost tricking or if it’s bad for the plant to be growing a little bit down

  • I’m confused. I thought both aluminized mylar and aluminum foil reflected infrared light — why emergency blankets are made out of mylar. I don’t understand why mirrors are riskier than mylar as far as infrared goes

By
Danny Danko
Tags: Grow Q&A

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