When drying, does VPD matter more than humidity?

HandyGringo

HandyGringo

Well-Known Member
I'm trying to prepare myself for drying, because I don't have a great location for it, except a furnace room that might be too hot for drying. So I've been reading up all I can to better understand how to dry my weed under those conditions.

I run into articles like https://growvera.com/what-makes-a-good-cannabis-dry-room/

Where it seems like VPD is more important than humidity, as in, if my room is hot, I can just raise the humidity a tiny bit to get the ideal VPD and by that measure, not risk bud rot. But I know when I look around the forums that 99% of the time, when talking about bud rot and drying, humidity is considered the main culprit, so raising the humidity because the temperature is too high, seems backwards to me. Even if that's how you'd obtain an ideal VPD.

For the record, the furnace room I plan on drying in is around 23c/70f and the humidity I'm not sure of, but that can be controlled a lot easier than the temperature.
 
B

Bud man 43

Well-Known Member
VPD only matters with a live plant
You want to shoot for 60rh at 60 degrees
I understand what you are saying- but drying over 62% can cause problems.
 
HydroKid239

HydroKid239

Well-Known Member
HandyGringo said:
I'm trying to prepare myself for drying, because I don't have a great location for it, except a furnace room that might be too hot for drying. So I've been reading up all I can to better understand how to dry my weed under those conditions.

I run into articles like https://growvera.com/what-makes-a-good-cannabis-dry-room/

Where it seems like VPD is more important than humidity, as in, if my room is hot, I can just raise the humidity a tiny bit to get the ideal VPD and by that measure, not risk bud rot. But I know when I look around the forums that 99% of the time, when talking about bud rot and drying, humidity is considered the main culprit, so raising the humidity because the temperature is too high, seems backwards to me. Even if that's how you'd obtain an ideal VPD.

For the record, the furnace room I plan on drying in is around 23c/70f and the humidity I'm not sure of, but that can be controlled a lot easier than the temperature.
Click to expand...
You can dry at 70F and be okay. It may dry a little quicker than average, but it’s a “do-able” temp. Maybe add a cool mist humidifier, and a fan to move the air slightly, but definitely keep an eye on them to check for dryness after 7 days.
I’ve personally dried at 68-70F with 55-60% RH, and they came out fine. I did experience plants from smaller pots/thinner stems taking less time to dry than others. Exapmle: 1gal pot drying within 8-9 days.. and a 5gal pot taking 13-16 days.
 
compassionateExotic

compassionateExotic

Well-Known Member
100% darkness, 60f and under and 60-62% rh, airflow moving but never hitting plant. Get urself a wood moisture meter and place in storage ( 5 gallon-tout ) once moisture is 12-15%, burp it to 8-12% goal at end is 8-12%. I would also once in storage have a 62% 67 gram moisture like integra boost in there.

I suggest keeping ur plant even if it’s a small stem on there when placed in storage , really keeps ur shelf life longer and when u need it just trim it than .


havent seen many people use wood moisture meter but I see soo many who do the “stem crack”, so many stems are thinner or thick and that rule never works for me vs moisture meter %. I moisture check the nug not the stem
 
amneziaHaze

amneziaHaze

Well-Known Member
HandyGringo said:
I'm trying to prepare myself for drying, because I don't have a great location for it, except a furnace room that might be too hot for drying. So I've been reading up all I can to better understand how to dry my weed under those conditions.

I run into articles like https://growvera.com/what-makes-a-good-cannabis-dry-room/

Where it seems like VPD is more important than humidity, as in, if my room is hot, I can just raise the humidity a tiny bit to get the ideal VPD and by that measure, not risk bud rot. But I know when I look around the forums that 99% of the time, when talking about bud rot and drying, humidity is considered the main culprit, so raising the humidity because the temperature is too high, seems backwards to me. Even if that's how you'd obtain an ideal VPD.

For the record, the furnace room I plan on drying in is around 23c/70f and the humidity I'm not sure of, but that can be controlled a lot easier than the temperature.
Click to expand...
should be the same vpd on any humidity, just some humidities need hotter enviorment.

As for drying or anything ,mold likes humidity above 60% .higher it is bigger the chance.
 
pegboy

pegboy

Well-Known Member
HydroKid239 said:
You can dry at 70F and be okay. It may dry a little quicker than average, but it’s a “do-able” temp. Maybe add a cool mist humidifier, and a fan to move the air slightly, but definitely keep an eye on them to check for dryness after 7 days.
I’ve personally dried at 68-70F with 55-60% RH, and they came out fine. I did experience plants from smaller pots/thinner stems taking less time to dry than others. Exapmle: 1gal pot drying within 8-9 days.. and a 5gal pot taking 13-16 days.
Click to expand...
Yea I think people get a bit hung up on 60/60. I dry at 70 more times than not and everything always turns out fine.
 
aFanOfThisCannabis

aFanOfThisCannabis

Active Member
compassionateExotic said:
100% darkness, 60f and under and 60-62% rh, airflow moving but never hitting plant. Get urself a wood moisture meter and place in storage ( 5 gallon-tout ) once moisture is 12-15%, burp it to 8-12% goal at end is 8-12%. I would also once in storage have a 62% 67 gram moisture like integra boost in there.

I suggest keeping ur plant even if it’s a small stem on there when placed in storage , really keeps ur shelf life longer and when u need it just trim it than .


havent seen many people use wood moisture meter but I see soo many who do the “stem crack”, so many stems are thinner or thick and that rule never works for me vs moisture meter %. I moisture check the nug not the stem
Click to expand...
The wood meter is a solid idea. Thank you.
 
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