Unpopular opinion: misting your indoor plants is basically useless

I spent 6 months religiously misting my calathea every morning because everyone says they need humidity. Finally bought a $12 hygrometer and realized my room was already at 50% humidity without any misting at all. Anyone else ditch the spray bottle and just use a pebble tray instead?

3 comments

3 Comments

holly_green822mo ago

You say you bought a hygrometer and found out your room was already at 50% humidity. But what about people like me who live in a dry climate? My house sits at 30% most of the winter. I tried pebble trays for my ferns and they barely moved the needle. Did you ever test your setup by putting the hygrometer right next to the plant after misting versus across the room, because I'm wondering if the local effect matters even if the room level doesn't change much.

joelp8115d ago

That's a fair point about the local effect, but actually misting does almost nothing for humidity even right next to the plant. I've put a hygrometer about 2 inches from a fern right after misting and the reading barely budged for more than a couple minutes. The water droplets just evaporate into the air too fast to make any real difference, especially in a dry room like yours at 30%. Pebble trays are pretty much the same story, they need a huge surface area and constant airflow to even slightly bump up humidity near the plant. What actually works in a dry climate is either a humidifier or grouping plants together in a tight cluster so they create their own microclimate. I'd skip the pebble trays and misting entirely and either get a small humidifier for your fern corner or move them into a bathroom or kitchen where humidity naturally stays higher.

emerycarr2mo ago

Honestly, I gotta push back a little here. That 50% reading from a single hygrometer doesn't tell the whole story because humidity can drop drastically right at the leaf surface, especially near a drafty window or a heating vent. Misting might only bump up local humidity for 15 minutes, sure, but for plants like calathea that are super sensitive, that brief spike can prevent leaf curl just enough. Pebble trays barely work in my experience unless you have a massive surface area evaporating, and even then a $12 hygrometer isn't exactly lab grade. Dry climate or not, if you mist right before the lights come on or the sun hits, that quick burst of moisture is way more targeted than any tray can manage.