Because photoperiod is the only way the plant knows what time of year it is!
As far as I know everybody grows indoors under ideal conditions so heat has got fuck all to do with the time of year,the grow room is the same temp in veg (summer) as it is in flower (winter). Please do remind me of what law says it has to be hot in Summer?
Learn to understand logic,you want to!
As for what you are about to say next concerning outside influences,heat stress really only affects cannabis at about 35c-40c (and only if you have shit humidity). I live in England,when was the last time we had a 35c-40c+ day in England?
haha yorky you dont half chat bollox mate......."As far as I know everybody grows indoors under ideal conditions" .......i think we all wish we did lol
"the grow room is the same temp in veg (summer) as it is in flower (winter)."..............some use cfls in veg so lower temps,
"Learn to understand logic,you want to!".........haha what a nob
"As for what you are about to say next concerning outside influences,heat stress really only affects cannabis at about 35c-40c (and only if you have shit humidity). I live in England,when was the last time we had a 35c-40c+ day in England?"........................you honestly think the temps need to hit 35-40c+ to affect temps in your grow if your ventin fresh air in from outside?...........if its cold outside the air you pull in is cool so temps are low, in winter my temps are like down at 23-24 in the room even have to run my extract at a slower speed if it gets too cold, then summer when its above 20 temps are like 27-28c with the fan on full even hit 30 when we had some 27c temps outside, so with poor extraction and what not you could easily be at 30 + in your grow for a few weeks which is gunna fuck ya plants.
The more you go on like you no everthing about growin an talk to people like there thick, the more i think your a cock an know fuck all about growin (google an wiki boy), even when your wrong you try an cover it up with more bollox an its plain to see.