Hello. Im trying to grow blue dream and sour diesel autoflower plants outside, starting in June, and then harvesting maybe in late July. However, the temperature gets up to the high 80s where I live in July, so, will that negatively impact the flowering stage of my autoflowers? Weed is supposed to have a lower temperature in the flower stage.
Autoflower in hot temps outside tips
- Thread starter Justin99997
- Start date
It can be done as long as the humidity is not to high , I have had them outdoors at around 82 f but they don't like it to much , slows them down - Humidity with be your issue .
I live in Australia and its 30-35 c. Every day my autos are flowering great
Take me to your Dealer
Take me to your Dealer
G.Leave
Cultivators Club
I am actually really surprised to hear 82F causes problems!! This summer was a hot, hot one here and my autos flowered really well. We had a record number of days over 28C(82F), a few reaching over 32, and a couple reaching over 35...it was something like 25 days in a row or close to right in the peak of flower. I am guessing that pots versus ground planted has a big impact. Our soil is very warm on top during that time being vey dark in colour, but dig down a foot and its quite cool.
Like you said my biggest struggle was not from the heat but from the humidity. Even though it was mostly a dry hot midsummer, the humidity was quite high averaging around 70%. Fairly high humidity is usual here during the heat of summer.
On days the wind stops in late June thru early aug, and the sun is out, my greenhouse can get hot, mid 80s to mid 90s. Usually there is a breeze singing through the greenhouse and getting lot of 70-80 degree days. And almost always cold nights, mid 30s to high 40s. Some strains have a hell of time, some just refuse, the one's that can hack do quite well. Harvest time is high RH and I got to watch it like a hawk. I'm pretty sure high temps during flowering produce more resin, been my experience up here. Blue Dream does real well for me, 2 yrs in a row
You should look in seed genetics then, the ones, from hotter places in the world. Like if you have hot and humidity check for thai genetics and if you have hot and dry climate, check hash plants, or from Morocco, maybe Pakistan, Afghanistan.
If you have over all, cold climate, but like me, quite dry and hot summer wich can reach 35 or more in mid summer, and quite cold and rainy autumns. Then don't forget to check when you gonna finish aprox... your flowering... and reach for best strains for that time of the year you got. But don't look to your all year average country weather.
If you have over all, cold climate, but like me, quite dry and hot summer wich can reach 35 or more in mid summer, and quite cold and rainy autumns. Then don't forget to check when you gonna finish aprox... your flowering... and reach for best strains for that time of the year you got. But don't look to your all year average country weather.
Maybe check out some of these Mandala strains which are tested in very hot climates:
http://www.mandalaseeds.com/Guides/Mandala-Heat-Resistance
http://www.mandalaseeds.com/Guides/Mandala-Heat-Resistance
"We breed strains that are heat resistant and used to thriving under higher temperatures. This beneficial trait has been thoroughly verified by growers in the past years who grow indoor in the summer or outdoor in hot areas. In particular, a good measure of heat resistance is important when you cultivate in a homebox or closet."
First photo on that site is 40.2C temp, then below looks like about 43C!!"our strains tend to grow and flower even at temperatures up to 50°C/120°F if necessary"
i live in Aust too, can get some heatwaves where its 35-40 deg C for a few days straight... heat is no problem for established plants, just keep the water up, young seedlings dont like it, i use some shade cloth during the heat of the day.
shade cloth!
