Growing Autoflowers in Greenhouse during Winter

sensizond

New Member
Hi all,
I am planning to plant some autos in greenhouse in Catalunya, Spain.
Anyone with experience in growing at greenhouse during winter.
How you mantain the temperature? If outside temp goes as low as 5 degrees and as high as 15, what temperatures should I expect in the greenhouse wihtout any heating?
I know I cannot expect good yields, but is it worth at all the try? I want to rely on sunlight only.
Any advise is much appreciated, if you have some pictures that will be great!
Thanks!
BR
SZ
 
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Nutty sKunK

Well-Known Member
All depends on how much sunlight they will get. That’s what they need.

on a sunny day my greenhouse can get to 20c when it’s 4c outside
 

sensizond

New Member
Thanks for the answer! What about the yields you got and what strains you used? It wont get more light then what the sun can offer. It will be on a sunny spot.
 

Nutty sKunK

Well-Known Member
Thanks for the answer! What about the yields you got and what strains you used? It wont get more light then what the sun can offer. It will be on a sunny spot.
Well it was a freak of nature. Survived a winter in Scotland as a seedling as my greenhouse is mostly shaded in winter. And flowered in April.

I would’ve gotten about 2-3 ozs but got hit by bud rot. It was a northern lights auto.
 

ISK

Well-Known Member
Hi all,
I am planning to plant some autos in greenhouse in Catalunya, Spain.
Anyone with experience in growing at greenhouse during winter.
How you mantain the temperature? If outside temp goes as low as 5 degrees and as high as 15, what temperatures should I expect in the greenhouse wihtout any heating?
I know I cannot expect good yields, but is it worth at all the try? I want to rely on sunlight only.
Any advise is much appreciated, if you have some pictures that will be great!
Thanks!
BR
SZ
Hola, ¿que tal?

Yes, I think it's worth the try but as you say the yields will be not be great.

You can't really do anything to maintain a good temp/humidity if sunshine is your only source....you get what you get

Considering you will have it in a sunny spot, it will survive and produce buds but they will likely be runts, or much smaller than normal.

I have tried it here in Canada from my windowsill and the results were terrible, but then again they didn't get much sunshine

This year I'm growing some auto's in solo cups, and just for the kicks I put one in a pot of soil only getting sunshine....you can see how much smaller it is compared to the others which are kept in a grow closet

IMG_1367.JPG

buena suerte
 

MATTYMATT726

Well-Known Member
Hola, ¿que tal?

Yes, I think it's worth the try but as you say the yields will be not be great.

You can't really do anything to maintain a good temp/humidity if sunshine is your only source....you get what you get

Considering you will have it in a sunny spot, it will survive and produce buds but they will likely be runts, or much smaller than normal.

I have tried it here in Canada from my windowsill and the results were terrible, but then again they didn't get much sunshine

This year I'm growing some auto's in solo cups, and just for the kicks I put one in a pot of soil only getting sunshine....you can see how much smaller it is compared to the others which are kept in a grow closet

View attachment 4708831

buena suerte
@ISK, shoot me a PM really quick when you get a chance as i wasn't able to message you. Thanks.
 
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