wouldn't it be better to just do this?

I'm a little worried, just put my plants into flowering and I'm reading horror stories about bud rot. I've been trying to keep my humidity down (2 regular fans, 1 exhaust fan, dehumidifier, opening windows for fresh air) and humidity is still at 60% or more.

As far as I understand it, humidity is bad because it creates bud rot.

My question: wouldn't it be easier to just buy a "bud rot" foliar spray than deal with the headache of trying to keep humidity down? Not to mention the ridiculously high expenses of buying a proper dehumidifier?

Looking forward to your answers. You pros on these forums are life savers (plant life savers, literally). Lol.

No offense, but you're a little paranoid. Bud rot isn't a very common problem and many growers have at least as high humidity as you do. Some of these strains grow in the freakin rainforest for crying out loud. By the way, dehumidifier + open windows = lost $.

Mother's Finest said:

No offense, but you're a little paranoid. Bud rot isn't a very common problem and many growers have at least as high humidity as you do. Some of these strains grow in the freakin rainforest for crying out loud. By the way, dehumidifier + open windows = lost $.

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Mother's finest, it's a relief to hear this from you, you do have almost 2000 posts up. And yes, I am paranoid, it's newbie paranoia! I've spent a lot of time on these forums just trying to anticipate anything that can happen. Dunno about the dehumidifer + open window equation though. It does drop my humidity and temperature down early in the mornings.

You should see my room though, when I open it up, there's so much condensation I can't imagine that my buds will enjoy it much. Let me re-phrase my question: instead of living in constant humidity paranoia, can't I just foliar spray and not worry about humidity?

What size dehumidifier and how big is the room?

With the window open, you are pretty much sticking your dehumidifier outside trying to dehumidify the world. Like opening windows with the a/c, heater on

With the windows open, the fresh air from outside would replace the air dried by the dehumidifier. You'd essentially be dehumidfying the outside.

Spraying the plants increases humidity. In high humidity situations, spraying should be avoided.

As long as you have constant fresh air flowing into the grow area and air blowing on the plants, the humidity shouldn't be any problem.

Alright, won't open the window again, I don't want to dehumidify the world, lol. I know spraying increases humidity but I'll spray them after lights out, with a "bud rot" foliar spray. The idea is to prevent budrot. I couldn't care less about humidity as long as my buds don't turn into crap.

Can't you just tell me if using a bud rot foliar spray will prevent me from worrying about humidity? That's my question really.

Don't spray them. Don't worry about humidity at 60% till your at week 5 then start to lower it. I keep my humidity at50% and never have problems. Just keep fresh air circulating in your room. The fresh air I'm talking about isn't from the outside its from your room or adjacent room.

the higher the humidity the longer the stalks will be on your trichomes, this makes them more prone to breaking and falling of after the drying/curing stage.

the lower the humidity the more resin the plant will produce so a low humidity serves more of a purpose than to just prevent "bud rot".

the chances are that if you see condensation on the walls of your grow room that you may encounter such problems. keep the window open during lights on and close it lights out with the dehumidifer on, then again it depends on what size and power your dehumidifer is.

try and keep it low and please don't spray anything on to buds, i really disagree with doing that.

Hey Ghb,

You said the magic words "the lower the humidity the more resin the plant will produce so a low humidity serves more of a purpose than to just prevent "bud rot". You've answered my question. Thanks for the great advice as well.

Just curious, why do you have such a strong opinion against spraying buds?

there are a number of reasons why i wouldn't spray my buds.

1 little particles of liquid can act as a magnifying glass and burn buds
2 spraying buds can damage resin production
3 high levels of moisture sitting on buds can cause powdery mildew or bud rot
4 it can make the pistils recede back into the calyx giving the appearance that the flower is fully ripened, it also stops the flower from growing and reaching it's full potential (i think)


there are products out there that are designed to be sprayed on buds and are supposed to boost resin and terpene production, i would steer well clear of anything like this.


all these points are only my oppinion, everybody should make their own mind up about what they want to do, i am trying to help people grow better weed based on what i find works for me, you should do what works for you.