Is low Humidity a Problem in Flower?

Just a general question but in my flower room the humidity is only around 20-25%. The heat stays between 70-78degress. Will this hurt my plants at all? And if so how can I add humidity to the room without buying a humidifier? Would just setting a large bowl of water on the floor perhaps create humidity?


any help is great thnx!

Plants like a lower level of humidity during flowering. It mimics late summer. Your humidity is a bit low, but I'd say as long as your heat is controlled and your plants aren't losing a lot of water, you should be fine. You also want to make sure your environment isn't too humid as this can pave the way for the dreaded bud-mold and a whole slew of other fungi.

~ooli~

is there a way to check if its too dry? I mean as far as soil goes it should be fine. I go by weight of the pot for when to water.

20-25% humidity is heaven for spidermites,you might want to add a cool mist humidifier the first 30-40 days of 12/12.It just seems a bit too dry for me.40% is OK

dang really? i thought bugs liked more wet atmospheres. that sux i really dont' want mites i'll have to find something :\

im hanging around 20-25 percent.... and im in week 5 with 4 girls under 12 23w cfls. and they are all healthy as shit, fattening up nicely considering the plant to light ratio....

so no... i dont think it is a problem.. plus i have 4 different strains... they are all happy man..

well thats good to hear! Is there any downside other than bugs? seems like if you keep them well watered they should be ok. Hope it doesn't affect bud production

Slurpy said:

well thats good to hear! Is there any downside other than bugs? seems like if you keep them well watered they should be ok. Hope it doesn't affect bud production

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watch for fungus gnats. and also, keeping them healthy with lower humidity means keeping in check your other factors. Such as good watering regiment, temps, nutrients, and ventilation. (etc)

But an upside to this should be you are less likely to experience mold problems.

Also.. the bowl of water thing is a mediocre idea to me. I did it a few weeks ago, it didnt raise the humidity much really(pretty sure because my temps are around 85-90 and exhaust is on 24/7)... but a gnat landed in it and got stuck, then dropped her eggs in it. Got to kill her and her young in one shot so it wasn't a horrible idea .

But yeah as far as bugs go i dont really have much of a problem at all.. i see/kill MAYBE one gnat every 1-2 weeks... (thought i might share as you may be interested as it relates to our similar humidity)

BUT ANYWAY... the point of the story, dude , is that you should be a- ok.

Wow awesome info +rep! Are the gnats already in the soil? Or are they drawn from outside? I just started using molasses I hope the sweetness doesn't attract them!

If it starts getting lower than 20% I'll grab a $30 cool humidifier I guess heh

Thnx

Slurpy said:

Wow awesome info +rep! Are the gnats already in the soil? Or are they drawn from outside? I just started using molasses I hope the sweetness doesn't attract them!

If it starts getting lower than 20% I'll grab a $30 cool humidifier I guess heh

Thnx

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You could try a clean, damp cloth to raise humidity as well. But it would most likely prove to be pointless, but i donno depends on temp@exhaust i believe.

And Gnats... it depends on your climate and the soil. For instance i took my soil from a relatives garden in fall, and i live in a region with a colder winter season. So now that its winter, i can only assume my occasional gnat has come from the soil as i dont think these insects are really thriving outside in sub freezing temperatures (but you know, they could come from larvae in the store on fruits or who knows where else, but im not bug expert just laying out some of the possibilities i see in mind). However, i have been baking my soil lately, as this sterilizes the soil.

But ultimately, slurpy, the best tool to fighting off these pests is proper watering. Water when your pots get light enough. Take note when you're pot is light and dry vs when it is wet and heavy. Do NOT overwater. Your plant will tell you when she is thirsty, you may hold off for a day or two when you want to water, then the following day open up to see a plant with really droopy leaves and kinda sickly looking. Don't get panicky, give it some water, then if you have the time just sit back and watch it. In the next 20 + minutes it will pick itself right up off the ground as if it never happened. (just dont starve them too long, remember, droughts are natural occurances.)

Another tip i could point out is to include hydrogen peroxide in your waterings, every watering. I use about 1 part peroxide to 4-6 parts water.

Hydrogen peroxides molecular structure is h2o2. Look similar to h2o? Thats because it is h2o with an extra oxygen atom. This extra oxygen atom is given off very easily due to the instability of the molecule, so when added to your water it will deliver oxy straight to the roots. It also kills bad bacterias and promotes the growth of good bacteria.


Very nice.

BUMP my humidity is 25% to 30% and i have been noticing my one plant is suffering what looks like nute burn on the new growth of new bud shoots (check out my pics) and i am wondering if that could be from my humidity being too low? and im scared to put a humidifier in my room because i work for 8 hours and im sure it will dry out, is it bad if it runs dry for an hour or two before i get home from work? is this a fire hazard? any info is appreciated

Yes,humidity and water useage are tightly joined.In a very dry environment the plant will take up more water and transpire that water out through stomata to keep its humid barrier.This has the effect of lowering the moisture content in the plant,thereby concentrating nutrients that were present in that water.Temperature,humidity and water/nutrient usage are tightly joined.If its very dry you are probably going to want to feed less.

I flower at around 15-25% but not by choice. I have never felt it hurt anything.

Check out the nutramist foggers they are awsome. I keep mine at 45% as I'm running perpetually.

Wouldn't a foliar spray of neem oil every 7 days knock the mites problem at low humidity %

Just add nematodes and stop worrying