Opinions and advice on heat tolerant strains....

Though I grow indoors, I'm in Arizona, and the heat is a bitch! My house is evaporatively cooled and I can't seem to keep it under 92 degrees when lights are on. So I'm just adapting and trying to do the more heat-tolerant strains.

Producing good yields at high temps has been - AK47, AK48, Skunk #1, and Afghan Kush. These all produced awesome looking, potent, dense sticky buds, and seemed totally uneffected by the temperature.

Producing horrible yields in the same exact space, has been - Barneys Pineapple Chunk, Alaskan Ice, Big Bang. These barely produced buds at all, whispy & airy. The plants were totally strained with the temps I'm working with.

Does anyone have any favorites that are suited to, or tolerant of the higher temps? Possibly seeds originating from equatorial lattitudes?

Mandala seeds.

from what Ive seen/read almost every one of their strains can handle high heat very well. I only have experience with Satori and 8Miles High but they were great in 90-110+ F temps last summer.

one would expect strains close to desert to at least get by in hot conditions. don't you get 50 degree nights out there? swamp coolers are about useless on a hot sunny day. wasn't there already a hot temps strains thread?

White widow needs hot and dry climates.

Danksalot hit the nail on the head, I too love Mandala's stock. Having grown Satori, Mandala #1, Kalichakra , I do believe Mandala Mike when he says his plants can handle extreme temps as long as they get enough water. Very,very tough and resilient strains from Mandala and affordable too.

I have ALWAYS flowered at night preferring 7:30 pm when lights come on, and 7:30 am when lights go off. As for when I'm in 24 hr veg cycle I use shoplight fluoros.I do not have a/c in my house either. I do however live in Colorado at almost 8,000 ft above sea level.

I only have one evaporative cooler fan and it's in my bedroom where my 2.5 x 2.5 x 5' tent is. It blows up to 500 CFM on high and my bedroom is 8.5'x11.5' in size. It can be 86 degrees in every other room in my house while my bedroom is around 74 degrees. It would be unbearable without my evaporative cooler. I won't ever go back to keeping lights-on cycle during the heat of the daylight hours.

Usually I turn the evaporative cooler fan off at 8:00 pm and turn the window fan in my bedroom from low up to high. Only running a 250 hps and an adusta-wing reflector though and temps rarely if ever get above 80 degrees in my tent. I've got an older model discontinued CanFan 5" hooked to a CanFan 9000 filter supposedly giving my an extraction of around 108 CFM pull from inside-to-outside of my tent.Also have a walmart 6" clip-on fan blowing straight towards my 250 hps bulb.

Best advice is run lights-on during the night when temps have cooled off. Temps at night where I live can get chilly, even in the middle of summer at night it can drop down to the lower 50's from being 90 degrees in the daytime.

This is the exact evaporative cooler fan I have, and I cut a circle out around the front plastic guard which gave me 1 degree lower in cooling power.

http://www.swampcoolersonline.com/Products/Portable Coolers/champion_ec302.htm

If you are running a lot of lights or bigger HPS bulbs , and even if running lights-on at night doesn't drop the temp enough, you may want to consider growing with a smaller HPS like a 250 just for the summer time and settle for a smaller yield just in the hot months, until Fall comes when you can go back to running the bigger HPS bulb.

There's always a way , it may come with a compromise though, but making a trade-off is better than getting nothing or either getting wispy airy buds.

If you don't switch to lights-on at night, at least try Mandala seeds, and I recommend Satori if you only try one strain, great yielder and the best Sativa hybrid high I've experienced.

http://www.mandalaseeds.com/Catalogue/Satori

Danksalot said:

Mandala seeds.

from what Ive seen/read almost every one of their strains can handle high heat very well. I only have experience with Satori and 8Miles High but they were great in 90-110+ F temps last summer.

Click to expand...

I'm growing Kalichakra outside this year under the Northern California sun, and chose this strain because of it's heat resistance and low odor.
When it comes to growing cannabis in hot temperatures, I'll take Mandala Seeds for the win.

Having grown Satori, Mandala #1, Kalichakra

Click to expand...

NICE! maybe you can answer my question. which one has the best buzz? satori? i know i love 8 miles high at the very least. hashberry's way too funky for me though. did one of the strains maybe have an outstanding flavor?

that pic in my avatar is seedsmans nemasis, it yields very well and grows in high heat.
Potent pot to
Its a N indian X Nepalies so thats how it can take a good kicking in heat-stress

(mine hit low 19oC and hit high of around 48-50oC Very HOT) and still yielded (pic if i remember right was grown in 6.5l pots) and she is fast (i chopped that @ 8-1/2 wk)


As for mandala Hashberry and speed queen I thought they were suited to the price i paid (£10 pr pack back in 07-08 when UK was over run buy an Hashberry + Speed queen grow thanks to the IN HB+SQ grow thread)

hazey grapes said:

NICE! maybe you can answer my question. which one has the best buzz? satori? i know i love 8 miles high at the very least. hashberry's way too funky for me though. did one of the strains maybe have an outstanding flavor?

Click to expand...

Satori is the best buzz to me, very up. Mandala #1 is also good, not quite as strong but still strong. Both of those when I grew them I used Botanicare SWEET which I think may have contributed to the lemon pound cake after taste they both gave me, they were each very lemony citrus, which I think they are anyway but the SWEET may have just brought that out more. Kalichakra was mediocre to me and disappointing but this was 2008 when I grew Kalichakra and Mandala re-worked that strain since then. I often wonder if Mandala Mike re-worked Kalichakra because of complaints from the lack of potency.

Anyway, Satori and Mandala #1 are both great strains.

Mandala Mike claims up to a 28% THC level for Satori, and I believe it. After growing over 20 strains I have yet to have any other Sativa high beat it. This is a thread of Mandala Mike talking about that >

http://www.icmag.com/ic/showthread.php?t=80919

cool. thanks for the info.

sounds like mandala has a heavy hitter in his archives to mix it up with jack's cleaner 2, haze skunk & sweet haze then. if it's lemony, it would fit right in with JC2 & malawi gold as well. i'll have to try it then. if nothing else, the genes should help make any crosses it's used in heartier without damaging the THC profile. 28% THC is crazy potent! just 20% in a strain that gets you high is a lot. i guess that's why he "charges a premium" for it as if calling $55 for any awesome gear qualifies as a premium. sounds like a bargain!

I know who's getting some Satori next grow
...This guy

I live in New Mexico and its been 100* for the past 2 weeks. The only way to beat the heat is to buy a window air conditioner and hook it up to your grow room.
Running an intake that gets fresh outdoor air will help alot in veg, but when its time to flower you gotta get an ac. You can get a little one for like $100 bucks, go check Biglots.