How do I raise the humidity of a grow room?
Professional grow rooms and closets have humidity controls to keep humidity at the correct level. If you have a homemade grow room, you should monitor its humidity level. There are several things you can do if the level is too low. Be aware, however, that mold problems created by high humidity may be worse than any problems created by low humidity, so don’t overdo it. Low humidity is more likely to be a problem during the winter, when indoor humidity is typically lower than in other seasons. This is particularly true in areas with cold winters.Install a Humidity GaugeGet an accurate measure of humidity before you start worrying that your grow room needs more moisture in the air by installing a humidity gauge, or hygrometer. Plants need lower humidity than you might think, 50 percent is fine for most plants and 40 percent is adequate for many, particularly when they are flowering. Measure the humidity to see what it is before trying anything. The humidity gauge will of course be useful
