Need help on how to prolong flowering stage, during cold temps!!!

[DilyanM]

Hello there,

I am growing in a greenhouse in soil. Last few weeks temps dropped down to low 30s (F). I am able to keep them somewhat warm and happy during the night, with propane heaters..so temps don`t go into the freezing zone. During the day, if it is sunny enough temps get to 70-75(F). By the "calendar" flowers are entering in their week 7 of flowering. I say by the "calendar" because INMO they have slowed down their growth tremendously and in reality they look like they are in week 4-5 , on top of that I water/feed them every other day , with little amounts since they don`t uptake as much. As you can tell by the pictures some of the flowers have started to "close" and "finish" , even though they are still small and not fully developed. My question is : Is there are a nutritional additive I can feed them with, which will extend their life cycle and let them put on some "weight" before finishing ? I assume the cold had stressed them a lot and they just want to finish/close before they "die" . I also have lowered the PK dosage , since that will cause them to close even quicker.


Thank you

 

[PipeCarver]

Hello there,

I am growing in a greenhouse in soil. Last few weeks temps dropped down to low 30s (F). I am able to keep them somewhat warm and happy during the night, with propane heaters..so temps don`t go into the freezing zone. During the day, if it is sunny enough temps get to 70-75(F). By the "calendar" flowers are entering in their week 7 of flowering. I say by the "calendar" because INMO they have slowed down their growth tremendously and in reality they look like they are in week 4-5 , on top of that I water/feed them every other day , with little amounts since they don`t uptake as much. As you can tell by the pictures some of the flowers have started to "close" and "finish" , even though they are still small and not fully developed. My question is : Is there are a nutritional additive I can feed them with, which will extend their life cycle and let them put on some "weight" before finishing ? I assume the cold had stressed them a lot and they just want to finish/close before they "die" . I also have lowered the PK dosage , since that will cause them to close even quicker.


Thank you

You may have stunted them with too much feed in low temperature's. You need a jeweler's loupe to look at you're trichomes for readiness. They look frosty albeit small, you still may get a good smoke off them

 

[mysticepipedon]

All the stigmas are still white. I think if they had the magic additive of heat, they'd bounce back.

At 50 F (10 C) biochemical reactions slow to a crawl. You get essentially no growth in plants or microorganisms. With every 10 F (5.5 C) increase in temperature, growth and activity doubles. If you can add heat for another month or so, you could probably get a normal harvest. You will probably have some low humidity issues to deal with if you increase temperatures, but there's no other remedy than increasing temperatures.

I had a grow in a room I framed in an uninsulated attic. The room, itself, was insulated with R-13, but the only heat source was the 1000W HID light. During lights-on,which was at night for this grow room, the temperatures were about 80 F (27 C). During lights-off (during daytime, outside the grow) the temperatures dropped to about 50 F. Flower maturity took about 2-3 weeks longer than it would have, if I was able to properly heat the grow during lights-out.

 

[dreamnfox]

All the stigmas are still white. I think if they had the magic additive of heat, they'd bounce back.

At 50 F (10 C) biochemical reactions slow to a crawl. You get essentially no growth in plants or microorganisms. With every 10 F (5.5 C) increase in temperature, growth and activity doubles. If you can add heat for another month or so, you could probably get a normal harvest. You will probably have some low humidity issues to deal with if you increase temperatures, but there's no other remedy than increasing temperatures.

I had a grow in a room I framed in an uninsulated attic. The room, itself, was insulated with R-13, but the only heat source was the 1000W HID light. During lights-on,which was at night for this grow room, the temperatures were about 80 F (27 C). During lights-off (during daytime, outside the grow) the temperatures dropped to about 50 F. Flower maturity took about 2-3 weeks longer than it would have, if I was able to properly heat the grow during lights-out.

I am trying this right now, the tent is in my garage, lights on its around 70deg lights off it gets down to 50. its really just an experiment to see if i can grow at all during the winter months. They are in the first week of flower and definitely seeing growth on the plants

 

[DilyanM]

Thanks for the replies. Weather will warm up in the next few days, hopefully that brings them back. They really dont look bad, it just that they had slowed down a lot and don't absorb nutrients as fast. I will ease off the food a little bit until temps go up. My run off was around 3.0 EC given I haven`t fed them too much lately. I don`t mind waiting for them an extra week or two as long as they restart the growing process.

 

[Oldchucky]

Do you supplemental lighting? If not, 10 hours of rather weak sunlight this time of year might not be helping matters. Just two cents.

 

[DilyanM]

I don`t have any lights. I agree with you, this is something I will invest in asap. Weather will get back to mid 60s in my area..so I am looking forward to it.