Help Help I'm Melting - they're wilting... dunno about anyone else but I've been struggling in this heat (well me as well but my cabinet grow in particular) - it was fine for the first few weeks (nice and cool indoors in fact) - then all those thick south facing Victorian stone walls had absorbed all the heat they could and are now storage heaters.
I hear you - Victorian brick storage heater here too! One of my plants has got so heat stressed I think it's going to croak.

I'm not entirely clued up on this but I believe there's a huge drop off in growth rate as temps rise above 30C (a lot of this has to do with relative humidity too - so high humidity high temp will slow stuff down), while I believe (somebody can contradict me) that you can run higher temps as long as you can keep humidity down and air circulation up to avoid hotspots.
I'll tag @Spanglish in here, he's mega-busy but he might get a chance to pop in. I think he grew some monsters in South East Spain and there's sod all rain there so humidity's low...
 
some good views and valid points made fair play growers good job. i dont mind admitting if im wrong;) but for me i grow my plants as if there outdoors but indoors. no day is the same and dark at night is normal to me. my plants grow strong and look forward to there dark time.i did many research on autos over my time and own findings on my growing journey. do a side by side. bet ur best auto is the 1 that got to have a nap;) happy growing every1;)
 
hi pal havent spoke in quite a while hope your keeping well ive grown a couple of girls outside i took one down this week and the other will be on Thursday ones in a 3ltr smart pot the tall lanky girl and a 10 ltr sour hound also i have a few in my tent i beat the heat i got a old air conditioner just by my tent as i recon this may be new summers every year now even with led lights i struggled without it ]
Hi I’m new to this and would like your advice on my royal dawalf plants they are the first autos I’ve grown they are outside :)
 

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I'll tag @Spanglish in here, he's mega-busy but he might get a chance to pop in. I think he grew some monsters in South East Spain and there's sod all rain there so humidity's low...

Thanks for the heads up - but I think even @Spanglish will agree it often works the other way round in Spain.. well the bits I know the damn humidity is a big problem (certainly in the south coastal Mijas) is often 70-80% - that's what makes it so sticky for all you party tourists - tho occasionally I must admit the temptation to just sleep under a damp bush near a nearby municipal sprinkler system had often crossed my mind too.

I've added some evaporation trays - capillary matting in small trays (plastic carry-out Chinese/curry house type) - these while taking up humidity to 55% (was 42) has shaved off a degree C - then I took the fly screens off the passive vents, less -ve pressure (that gave me another degC) - and well if i stick a magazine in the door and ignore the chink of purple lighting in the study that's another deg C (that pretty much blows the -ve pressure so thank god the Beary White isn't a stinker he he).

Little things all add up so that's back running under 30C

Low humidity has been on our side in the UK at least, if things get too humid in high temps that's when you loose transpiration and everything starts to slow a bit growth wise. Well that's been my hot temps outdoors experience in Spain to date anyway - never tried indoors there just cause with all the sun it seemed futile (tho the daylength is shorter which is not perhaps best suited to Autos) but I'm never there long enough to look after a photo.
 
also this afn new layout is hurting my eyes. or is it just me?? happy growing every1;)

I agree I miss all the subtle shades of green... It's like I'm looking at the 'print friendly' option you get on some sites.
 
some good views and valid points made fair play growers good job. i dont mind admitting if im wrong;) but for me i grow my plants as if there outdoors but indoors. no day is the same and dark at night is normal to me. my plants grow strong and look forward to there dark time.i did many research on autos over my time and own findings on my growing journey. do a side by side. bet ur best auto is the 1 that got to have a nap;) happy growing every1;)

Haha fair play mate. I reckon you should do that comparison yourself, reckon you'd be surprised that it made no difference to autos because autos are not sensitive to light! Its all about the genes not the light mate. Different matter with photos.... veg them on 24/0 and I personally have found they look rough.

PS. Dark at night is normal to you cos you aint an autoflower cannabis plant you nutter!! :thumbsup:
 
Thanks for the heads up - but I think even @Spanglish will agree it often works the other way round in Spain.. well the bits I know the damn humidity is a big problem (certainly in the south coastal Mijas) is often 70-80% - that's what makes it so sticky for all you party tourists - tho occasionally I must admit the temptation to just sleep under a damp bush near a nearby municipal sprinkler system had often crossed my mind too.

I've added some evaporation trays - capillary matting in small trays (plastic carry-out Chinese/curry house type) - these while taking up humidity to 55% (was 42) has shaved off a degree C - then I took the fly screens off the passive vents, less -ve pressure (that gave me another degC) - and well if i stick a magazine in the door and ignore the chink of purple lighting in the study that's another deg C (that pretty much blows the -ve pressure so thank god the Beary White isn't a stinker he he).

Little things all add up so that's back running under 30C

Low humidity has been on our side in the UK at least, if things get too humid in high temps that's when you loose transpiration and everything starts to slow a bit growth wise. Well that's been my hot temps outdoors experience in Spain to date anyway - never tried indoors there just cause with all the sun it seemed futile (tho the daylength is shorter which is not perhaps best suited to Autos) but I'm never there long enough to look after a photo.

Hi pal sounds like you getting on top of things now and have done just about all you could and even with the odds and extremes against you look to have turned things around nice like in your favour.

As you say RH in the coastal areas over here in the hottest months is though the roof, this seems to be the same across the whole southern coast from Cadiz to Almeria and also in the east all the way up to Catalonia and the border to the south of France. We were about 40 mins or so inland in the mountains of Murcia and with very little inland fresh water in the region RH would drop hard once it stopped raining and the dry summer period would come along.

Being outdoors not much we could do about it really, so just tried to get them in early enough in Spring so they could veg nicely and get established before the long hot dry patch set in, after that they were just left to do their thing and apart from the occasional hermie popping here and there did not seem too fazed by the high (30c-40c) temps and low (20%-30%) RH and always ended up with a monster haul of decent if not be it occasionally seeded bud.
 
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