Best strains for September harvests?

Sawzall77

Well-Known Member
The whole purpose of having a greenhouse is that it can lengthen your season... among a ton of other advantages. Helps keeps the plants a little warmer so They WILL keep maturing into October no problem... that’s why I’m building mine! Even if I gotta throw heaters in there. Plants have a chance for sure to finish with a diy greenhouse of sorts if you live in the north... I’ll keep my space warm enough to finish I’m sure of it
 

Danielson999

Well-Known Member
The whole purpose of having a greenhouse is that it can lengthen your season... among a ton of other advantages. Helps keeps the plants a little warmer so They WILL keep maturing into October no problem... that’s why I’m building mine! Even if I gotta throw heaters in there. Plants have a chance for sure to finish with a diy greenhouse of sorts if you live in the north... I’ll keep my space warm enough to finish I’m sure of it
I don't use a greenhouse to lengthen my season. It's just to keep rain off my plants in the fall and prevent bud rot. I tried enclosing my greenhouse but learned really fast that if you don't have amazing air extraction your humidity shoots through the roof. So I just leave my ends open for the whole year and use the greenhouse solely to protect from rain. It does also help when it gets windy too which is a bonus and stops random bird shit from hitting the plants.
The only way you can throw heaters in your greenhouse is if you have it totally enclosed or the heat just escapes. If you do enclose it you need strong air flow which also kinda defeats the purpose of using heaters. The only real way of using heaters in the fall is to totally enclose your space and run a dehumidifier. That's my experience anyway. You'll find out for yourself this fall! Good luck with whatever way you choose to do it and I look forward to some pics later this year.
 

Sawzall77

Well-Known Member
I don't use a greenhouse to lengthen my season. It's just to keep rain off my plants in the fall and prevent bud rot. I tried enclosing my greenhouse but learned really fast that if you don't have amazing air extraction your humidity shoots through the roof. So I just leave my ends open for the whole year and use the greenhouse solely to protect from rain. It does also help when it gets windy too which is a bonus and stops random bird shit from hitting the plants.
The only way you can throw heaters in your greenhouse is if you have it totally enclosed or the heat just escapes. If you do enclose it you need strong air flow which also kinda defeats the purpose of using heaters. The only real way of using heaters in the fall is to totally enclose your space and run a dehumidifier. That's my experience anyway. You'll find out for yourself this fall! Good luck with whatever way you choose to do it and I look forward to some pics later this year.
I see.... hmmmm... well im in for it now! Lmao I guess I’ll cross my fingers for a late summer lol. My only other option is to blackout but that will be a real pain and don’t know if I can afford those tarps. My strains supposedly flower mid sept and a couple that say early October so if I can’t keep my plants going through at least first week of November I think ima be in trouble! I’ll just have to play it as she goes I guess
 

Danielson999

Well-Known Member
I am seriously thinking about throwing a cheap canadian tire tarp over my greenhouse starting at the end of June when the days start to shorten every so slightly. I bought a 20'x20' tarp or something along those lines that will mostly cover my area which I'm sure is good enough get the plants changing earlier. It's just a matter of getting out there and doing it every evening and every morning. Gonna try it this year and see how it affects things. Live and learn...
 

Blue back

Well-Known Member
That's not how it works. Once it starts getting too cold, the plant will just stop progressing. It happens to me every year. I can have an 8 week strain that takes 10 or even 12 weeks because once it's getting so little sunlight and the temps are cold even during the day the plant just stalls. It doesn't matter what strain, could be any strain available. When you harvest depends on our weather. If we get an indian summer with really warm weather all the way through Sept then plants flourish and harvest on time. Where I live that doesn't happen very often.
I've been growing in Michigan since I was 12 with relatives. I'm 47 now and the strains we grow must have perfectly adapted to the cold early fall because they don't stall until they've been frosted. You obviously never grew in the northern hemisphere huh.lol your wrong bud
 

too larry

Well-Known Member
I am seriously thinking about throwing a cheap canadian tire tarp over my greenhouse starting at the end of June when the days start to shorten every so slightly. I bought a 20'x20' tarp or something along those lines that will mostly cover my area which I'm sure is good enough get the plants changing earlier. It's just a matter of getting out there and doing it every evening and every morning. Gonna try it this year and see how it affects things. Live and learn...
Most folks throwing shade do it in the afternoon, then remove the tarps after good dark. That lets the plants dry out quicker with the morning sun.
 

FresnoFarmer

Well-Known Member
I am seriously thinking about throwing a cheap canadian tire tarp over my greenhouse starting at the end of June when the days start to shorten every so slightly. I bought a 20'x20' tarp or something along those lines that will mostly cover my area which I'm sure is good enough get the plants changing earlier. It's just a matter of getting out there and doing it every evening and every morning. Gonna try it this year and see how it affects things. Live and learn...
July 30th, 2014 i think i started covering 2nd week of june. Twas only a 10x10 gh though. Used cheap black 6 mil plastic sheeting custom cut and gorilla taped for my needs. Fit right on too.
IMG_1386.jpg
 

Danielson999

Well-Known Member
I've been growing in Michigan since I was 12 with relatives. I'm 47 now and the strains we grow must have perfectly adapted to the cold early fall because they don't stall until they've been frosted. You obviously never grew in the northern hemisphere huh.lol your wrong bud
Not wrong, just telling you what it's like growing where I am. I'm in BC, Canada a couple hundred km's from the border. I'm glad you have magical strains the defy the laws of nature. I'm sure everybody would love to have some of those beans. The rest of us are stuck growing plants that unfortunately are majorly affected by our climate. Perhaps your climate is better suited to pot plants? ;)
 

Danielson999

Well-Known Member
That's a tough situation, I'm at 43°N and very few even finish for me in September.
I grow 8 week flowering plants every year that aren't ready to harvest until the end of October. That makes the flowering time about 12-14 weeks depending on when they start flowering that particular year. There's no such thing as a 7 or 8 week flower here until you harvest early.
 

Sawzall77

Well-Known Member
When would you stop using the tarp to blackout? Late August or so? I’m sure by September the days are short enough not to need to cover. Really, you would only need to cover, uncover for maybe a month, even less. That’s actually not such a bad idea you know.... hmmmm
 

Herb & Suds

Well-Known Member
I am seriously thinking about throwing a cheap canadian tire tarp over my greenhouse starting at the end of June when the days start to shorten every so slightly. I bought a 20'x20' tarp or something along those lines that will mostly cover my area which I'm sure is good enough get the plants changing earlier. It's just a matter of getting out there and doing it every evening and every morning. Gonna try it this year and see how it affects things. Live and learn...
Twice every evening
 

too larry

Well-Known Member
When would you stop using the tarp to blackout? Late August or so? I’m sure by September the days are short enough not to need to cover. Really, you would only need to cover, uncover for maybe a month, even less. That’s actually not such a bad idea you know.... hmmmm
Most strains would be safe after 10 1/2 hours of dark. But you would need to know your strain, and what it's flower/veg trigger point is to be worry free,
 

thumper60

Well-Known Member
I am seriously thinking about throwing a cheap canadian tire tarp over my greenhouse starting at the end of June when the days start to shorten every so slightly. I bought a 20'x20' tarp or something along those lines that will mostly cover my area which I'm sure is good enough get the plants changing earlier. It's just a matter of getting out there and doing it every evening and every morning. Gonna try it this year and see how it affects things. Live and learn...
u might want to run lights for longer day till 6-21 then turn off light.might trigger quicker ?been wanting to try it outdoor myself.
 

Danielson999

Well-Known Member
You can't leave the tarps on all night though
Moisture will build up at night and cause mold
That is why most people don't try it
My tarp will only cover 90% of the top. Both ends will be open. I know it won't be like blacking the garden out but it will seriously darken the area. Yeah I learned my lesson about enclosing my greenhouse totally.
 

Danielson999

Well-Known Member
u might want to run lights for longer day till 6-21 then turn off light.might trigger quicker ?been wanting to try it outdoor myself.
I thought of that too. If I could keep my plants indoors until the end of June I could literally just run the lights 18 or 20 hours a day until they go outside. I just don't want to run plants indoors until the end of June, gets too hot and I'd need to run A/C just to keep them going.
 
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