My greenhouse ferns were dying for 6 months until I caught the real problem
I've got a small 8x10 greenhouse in my backyard in Portland, and for half a year I watched my ferns slowly turn brown and crispy. I tried more water, less water, shade cloth, even repotted them with fresh soil. Nothing worked. Then last month I grabbed a cheap humidity meter from the hardware store for $12 and found out my greenhouse was sitting at 30% humidity in the afternoon. Ferns need at least 60% to stay happy. I set up a simple misting system on a timer that kicks on for 30 seconds every hour, and now they're popping out new fronds like crazy. Has anyone else dealt with a humidity issue that seemed like something totally different?