Humidity is crucial for many houseplants, especially tropical varieties. While there’s plenty of advice floating around online, not all of it holds up under expert scrutiny. In fact, some popular humidity tips can do more harm than good. Here are five houseplant humidity tips that gardening pros actually hate—and what to do instead.
1. Grouping Plants Together Increases Humidity Significantly
Why Pros Disagree: While grouping plants can slightly increase local humidity, it’s often not enough to make a measurable difference for moisture-loving plants.
The Problem: Relying solely on plant clustering can leave sensitive plants struggling in dry conditions, especially during winter.
Pro Tip: Instead of relying on grouping alone, use a humidifier to maintain consistent levels of 50–60% humidity.
2. Misting Your Plants Daily Keeps Them Happy
Why Pros Disagree: Daily misting may feel like a nurturing ritual, but it does little to increase ambient humidity—and can actually cause issues.
The Problem: Excess moisture on leaves can encourage fungal diseases, especially in plants like African violets or fiddle leaf figs.
Pro Tip: Focus on boosting overall room humidity or use a humidity tray instead of misting.
3. Bathroom Plants Don’t Need Extra Humidity Care
Why Pros Disagree: It’s a common myth that just placing a plant in a bathroom ensures it gets the humidity it needs.
The Problem: Unless you’re running hot showers regularly and the room stays closed off, humidity levels may still be too low.
Pro Tip: Use a hygrometer to check humidity levels in your bathroom. Supplement with a small humidifier if needed.
4. Pebble Trays Are the Ultimate Humidity Hack
Why Pros Disagree: Pebble trays are often touted as a miracle solution—but their effectiveness is overstated.
The Problem: They create very localized, minimal humidity that may not benefit your plant unless it’s a small plant in an enclosed space.
Pro Tip: Consider them an aesthetic addition, but don’t depend on them for serious humidity control.
5. Humidity is Only a Concern in the Winter
Why Pros Disagree: While indoor air does tend to be drier in winter, summer air conditioned rooms can also have low humidity.
The Problem: Focusing on one season can lead to humidity neglect year-round.
Pro Tip: Keep a hygrometer in your plant area to monitor levels consistently, no matter the season.
Final Thoughts
When it comes to plant care, good intentions aren’t always enough—especially when dealing with humidity. Avoid these common houseplant humidity myths, and trust the tips gardening pros actually recommend. Your tropical plants will thank you with healthy growth and vibrant leaves.
