Low Humidity

[upabove]

I have one plant, she is into her flowering stage and the humidity is at 35. How can I raise it to an ideal level say: 50. I do not have any issues with bugs or mold. What might happen if I don't get the humidity up? Do you even think its much of an issue at this point?

 

[kittysecrets4u]

At humidity levels lower than 45%, the marijuana will dry too fast and the taste will suffer. At humidity levels higher than 55%, the marijuana will take a long time to dry, and it will be prone to mold.

Get a Humidifier with a shut off mechanism that will shut it down at a specific humidity... 30 - 50 bucks

Hope that helps....
​

 

[Rocketgirl]

There was a thread about this a few days ago. Hope it helps.

https://www.rollitup.org/newbie-central/35516-humidity-problems.html

 

[Rocketgirl]

Im flowering also and mine's at 10%. Seems fine to me. I havent noticed anything unusual.

 

[upabove]

Ok thanks for the feedback. I guess I'll just leave it alone. I havent had any problems with it yet so.

 

[themink86]

mines around 12% and 3 weeks veg but my leaves are tunring yellow..also fertilized once so could be burn

 

[BCtrippin]

35% is IDEAL for late flowering. Mold and mildew can't reproduce in low humidity.

Marijuana actaully produces more resin to protect the buds if you bring your humidity down to around 35-40% during flowering.

At humidity levels lower than 45%, the marijuana will dry too fast and the taste will suffer. At humidity levels higher than 55%, the marijuana will take a long time to dry, and it will be prone to mold.

Get a Humidifier with a shut off mechanism that will shut it down at a specific humidity... 30 - 50 bucks

Hope that helps....
​

You must have read that for how to Dry and Cure marijuana, not for growing. And 45% is NOT too low at all.

 

[themink86]

what happens if it is only at 20%

 

[BCtrippin]

what happens if it is only at 20%

It really depends on your temps. Humidity is relative to temperature.

Every strain is different and will react different to high or low humidity. Some outdoor strains thrive in 32* heat with high humidity, other strains couldnt handle it for an hour.


The common problems you run into are...

With low humidity its transpiration. When you run warm with extreme low humidity the plants leafs will all reach up and the tips will curl up. Worst case scenario your plants won't be able to take up as much water as they transpire and it will affect yields.

High humidity can run into all kinds of other problems. Transpiration will slow down with high humidity, which means the plants roots are taking up less water. Which will again affect your yields.

The more water/nute solution that goes through a healthy plant the better.

Other major issues that you have to worry about with high humidity is Mold and Mildew. Once you start venturing into high humidity you increase chances of mold and mildew by 100%

Mold and mildew spores are always present in the air. It takes ideal conditions for those mold and mildew spores to settle and reproduce(heat, humidity, little to no air flow). Once you can see the mold or mildew it is reproducing and should be taken care of ASAP.

 

[themink86]

well lets say they look like this....it gets worse day by...fan leaves are looking weaker and weaker - they are turning yellow and droopy at the tips of the leaves - some are curling but look heathy as hell...
plant 1 - yellow leaves and droopy at the tips of fan leaves
plant 2 - curly leaves but green as hell

 

[themink86]

well lets say they look like this....it gets worse day by...fan leaves are looking weaker and weaker - they are turning yellow and droopy at the tips of the leaves - some are curling but look heathy as hell...
plant 1 - yellow leaves and droopy at the tips of fan leaves
plant 2 - curly leaves but green as hell

also the leaves that are curling on plant two were facing away from the light when i first noticed...humidity is around 15% avg. and about 83-88 degrees

 

[BCtrippin]

How often do you water? Are you letting the soil dry out before watering? They do look like they are being overwatered a bit. Let the soil dry out and pull some fresh Oxygen to the roots before watering again.

And raise the humidity. Put a bucket of water with a towel in there if you have too.

 

[themink86]

i have a water meter and i am watering like every 4 days with fertz every other time (only once so far tho) also bought a humidifier today so that should most def help i would hope

 

[trombon84]

well lets say they look like this....it gets worse day by...fan leaves are looking weaker and weaker - they are turning yellow and droopy at the tips of the leaves - some are curling but look heathy as hell...
plant 1 - yellow leaves and droopy at the tips of fan leaves
plant 2 - curly leaves but green as hell

If you added nutrients when you watered, than you burned them a lil bit. They are too young for nutrients. they should get only PH-ed water at this point. You'll probably wanna start adding 1/4 strainght solution after 14-15 days.

If its not nutrient burn than thats because of heat. Your temp should be not higher than 80-82 AT THE MOST.

looking pretty sweet tho

ps: when you check the humidity of the soil, make sure that you check it at the roots level and on the bottom

 

[CaptainPothead]

What about humidity affecting the sex of the plant? Ive herd that not enough humidity can cause the plant to herm out a little. Does this sound accurate to anyone?

 

[trombon84]

anything that is a lil out of balance can make a plant go hermie. With other words, any shock can affect the plant