How Do I Protect My Bonsai Trees In Winter?

I explain why it's a good idea to protect your bonsai trees in the winter and share some tips on how to do so. I live in USDA plant hardiness zone 6 (winter minimum temperatures around 0 deg F (-18 deg C)), so my advice is most applicable in climates that experience winter temperatures below freezing. When it comes to protecting temperate bonsai trees in the winter, the Goldilocks principle applies: you want your trees to get cold enough to go dormant but don't want to let them get so cold that the roots will be damaged. I share the temperature rules that I've learned from others and that I use. To find your USDA plant hardiness zone, you can enter your zip code on this map: https://planthardiness.ars.usda.gov/