Agriculture Reference
In-Depth Information
Never use softened water on your plants
Low Humidity and High Temperature Gardens
If your gardens run up in the high 80s (F) or hotter, and your humidity is often below 45% your cannabis
plantscangothroughatonofpotassium(K),andIthinktheyactually sweatitout.Ifyouhavereallygood
circulation in your garden, as you should, this can just exacerbate the problem. Now many indoor gardens
have to run low humidity because they are infected with powdery mildew, but if you are not infected, then
feel free to toss a humidifier in your gardens to maintain around a 50-60% humidity level, like I do, and
this will really help you with heavy duty K usage. Otherwise, just keep your K in mind always, and know
that things like kelp and seaweed stuff, as well as molasses, greensand, and good, all-purpose dry fertilizer
with a good K number are all good ways to make sure the K keeps flowing in your garden. When I used
to see this in my grows in the olden days when I had powdery mildew and ran my humidity down around
30% I would just use soluble seaweed in my teas, and sometimes even when I just watered. Again, as with
anything,don'tgoinsanewithusingseaweedextractoryouwillcauseyourselfproblemswiththingslock-
ing out, like nitrogen!
REV'S TIP
If you are plagued with powdery mildew, you can bring in a dehumidifier and
run your humidity down between 35-45%. This will help slow down the mold a lot. Running a low
humidity will also cause your plants (and microbeasties) to go through a lot of calcium, and your
plants will also use a lot of potassium in low humidity environments—especially with good air
movement. Keep in mind that plants can only absorb calcium and potassium slowly and steadily, so
