Strain which can handle temp up to 42 C

Most high-potency cannabis strains are native to regions where it gets as hot as 40C+in summer - Thailand, Pakistan, India, Afghanistan, South Africa and so on. Cannabis can definitely grow outdoors in temperatures over 40C.

Seedlings may need to be slowly acclimatised to the outdoor conditions. Starting with an hour or two outside around mid-morning, their exposure can be extended by 20-60min per day, depending on how hot it is. By the time they're spending the whole day outside, they'll be much bigger and will be able to handle almost any amount of sun, as long as they have access to plenty of water.

Temps over 35 or 40C are often lethal for indoor plants, but this is also due to the fact that such indoor temperatures are usually caused by lack of air exchange (ie underpowered fans), meaning that plants are suffering due to lack of CO2. Hot indoor conditions also promote the spread of all sorts of pests, fungus and diseases.

Outdoors, there's no problem of air being depleted of CO2, so as long as plants don't dry out, they should grow very vigorously.

Sativas often come from hotter climates than Indicas, so strains like Jack Herer, Jack Flash, Mother's Finest, Juicy Fruit, Early Pearl, Jamaican Pearl, Durban and Mexican Sativa would be suitable. I'm fairly certain that Indica-dominant strains with genes originating in India and Afghanistan, as well as the Skunk strains, could also flourish in very hot, sunny conditions.

As an added bonus, flowering plants in very hot, sunny conditions will often produce an even thicker coating of resin glands over their buds in order to protect them from dehydration.

EDIT - having read just a little about the climate of Lahore, I see that it gets extremely hot (a record of 48C in the shade and 55C in direct sun!), but I still think cannabis should be able to grow outdoors if acclimatised and well-watered.

Out of interest, in the hottest part of summer, does most green plant life die off? Or is it still very green around water sources, even in the height of summer? If it's the latter, cannabis should also be able to do well.

if shop brought fertilizers are not possible there are many natural alternatives animal manures(sheep,cow,horse,goat,rabbit,etc)are a great source of free nutrients although they will need to be processed(composted/made in to teas)there are many resources on the web about manures and organic cultivation.

lol mellow, im by no means an expert.

@lahori,

I'm skeptical on the bin laden front. I'd be very surprised if they got him when they said.

Yearh, there's defo some potent buds around, but when you make the hash from the leafs, it'll be even stronger :)

IMO its always best to go organic but im thinking organic nutrients might go off in the high temps possible in your location so maybe chemical ferts are the way to go but i could be wrong

Then cannabis should be able to flourish if acclimatised as a young plant and given plenty of water as she grows and flowers.