Can a seedling grow in a 12 hour light period?

[austinhotunes]

I live in AZ, and the temperatures are perfect for growing right now. The only problem I face is the 12 hour light periods, since we're in winter. Could the seedlings grow in a direct sunlight, well lit place for only 12 hours? Thanks for any help

austinhotunes Reviewed by austinhotunes on 11-19-2010. Can a seedling grow in a 12 hour light period? I live in AZ, and the temperatures are perfect for growing right now. The only problem I face is the 12 hour light periods, since we're in winter. Could the seedlings grow in a direct sunlight, well lit place for only 12 hours? Thanks for any help :) Rating: 5

[captaincola28g]

It will, Now it might only have a short veg and then turn to flowering due to the lack of daylight . Which in return might mean smaller plants. Now if you veg indoors for a month or so at 18/6 ,then place outside to flower. you might be able to yeild more product.

[LetsSeeYa]

Hey what he said and i would plant a bunch of seeds, outside you should get maybe a 1/2 oz or more. If ya put like 30 seeds some place you might get 15oz's or more. But its hard to get all direct sun light so try and give them as much as possible.




:rasta:

[truepunk87]

We tried to do that in texas. Planted a bunch of seeds around the end of october.......they grew a few weeks and started to flower. Unfortunetly we had a couple weeks of low 30's weather and none of them made it through it.

[StoneMeadow]

Hmm, timely post!

I have a south-facing sunroom with all-day direct sun light, so I've been wondering if I can veg seedlings 18/6 for a month indoors, then move them into the sunroom for flowering?

Thanks

[StoneMeadow]

I just went to the Naval Observatory website, entered my city and state and had it calculate my local sunrise and sunset for the year. If I start clones or seeds in veg today, a month from now would be the first day of winter, which is calculated to have 9 1/2 hours of daylight. I will gain a few minutes of daylight a day every day after that, reaching 12 hours by March 22.

Has anyone played around enough with lighting to know if that's enough to get cannabis to produce bud? Usual winter daytime temps in the sunroom are 60's to 80's, depending if the sun is out, with nighttime temps dropping into the 50's or high 40's.

[gypski]

I just went to the Naval Observatory website, entered my city and state and had it calculate my local sunrise and sunset for the year. If I start clones or seeds in veg today, a month from now would be the first day of winter, which is calculated to have 9 1/2 hours of daylight. I will gain a few minutes of daylight a day every day after that, reaching 12 hours by March 22.

Has anyone played around enough with lighting to know if that's enough to get cannabis to produce bud? Usual winter daytime temps in the sunroom are 60's to 80's, depending if the sun is out, with nighttime temps dropping into the 50's or high 40's.

I'd venture that in your sunroom, yes. Especially an indica strain.

[Slevinkal]

Hmm, timely post!

I have a south-facing sunroom with all-day direct sun light, so I've been wondering if I can veg seedlings 18/6 for a month indoors, then move them into the sunroom for flowering?

Thanks

How old/new are your windows in that room?

Are they double pane windows?

Are they energy star rated?

If you have relatively new windows with a high energy star rating the light is filtered a lot. The Low-E glass and argon gas in newer windows wont let very much good light in. The plants may be in full sunlight but still wont get all they need cause about 30% or more of the light is filtered out. It looks like there is plenty of light but it's not good light.

Just food for thought

[StoneMeadow]

I'd venture that in your sunroom, yes. Especially an indica strain.

Ah, that's good to know...thanks!

How old/new are your windows in that room?

Are they double pane windows?

Are they energy star rated?

If you have relatively new windows with a high energy star rating the light is filtered a lot. The Low-E glass and argon gas in newer windows wont let very much good light in. The plants may be in full sunlight but still wont get all they need cause about 30% or more of the light is filtered out. It looks like there is plenty of light but it's not good light.

Just food for thought

Good points...thanks! The room was built by a previous owner of single-pane 3' and 4' wide sliding glass doors. The Guardian brand is etched in the glass, along with ANSI Z97.1-1975,the words "Safety Tempered" and some other what looks like production coding, but nothing about about energy star or low-e.

In any case, my tomatoes, sweet peppers, zucchinis and other veggies do fine behind them. I was really just curious if natural daily winter light alone was simply too short for the plants to bud out. I live about an hour's drive outside San Francisco at 38 degrees north.

[MadSativa]

12 hours will do it but if you get a little t5 light you can get a much better yield and start em in agreen house or under plastic. either that or plant like 30, and get allot of little plants which is standard practice for winter outdoor grows.