lighting for vegetation, lighting for flowering???

[stone free]

Hi
My question is pretty simple really, how many hours on light cycle do you use for optium vegetation growth, and how many hours on for optium flowering. Can u flower the plants at any stage?

stone free Reviewed by stone free on 01-17-2007. lighting for vegetation, lighting for flowering??? Hi My question is pretty simple really, how many hours on light cycle do you use for optium vegetation growth, and how many hours on for optium flowering. Can u flower the plants at any stage?:p Rating: 5

[GrowRebel]

I have my ladies in the veg stage on a 18/6 schedule, but some have 24 hrs .... I say save the electric. Flower is 12/12. Whether or not you get optimum veg or flower depends on your lighting.

This board is a gold mine of information on this subject.:rastasmoke:

:noel:

[stone free]

cheers dude, will search, how long does the flowering stage take??

[PaBudsX420X]

hey stone, umm flowering usually can take anywhere from 6-8 weeks depending on strain. Rebels got you on the right track with 18/6 and 12/12. I would say wait atleast 30 days after sprout before flowering, but you can wait pretty much aslong as you want i personally would go no shorter than 30 days. but thats my insight hope i helped good luck.

[GrowRebel]

cheers dude, will search, how long does the flowering stage take??

Dude?????:error: :toilet_claw: :weedpoke: :microwave:

[Chronic Chrissy]

In my opinion 24hrs of light is not efficient. Plants in veg need adark period just like during flowering. During the dark period the plant diverts it'senergy from veg production to root production. The stronger and heathier the roots the increase in potential there is for veg and flower growth. I've also read in a few booksthat a plant is unable to absorb more that 16 hoursof light a day and anything extra is wasted energy. I myself push this a little and use 18/6 for veg. But that's as far as I am I plan to start flowering with 12/12 the firsat ime this weekend.

[herbaltivo]

I am a new grower and I am using a 24/0 cycle for 6 plants with 8 100w cfl's and 1 175w MH, and my plants seem happy. I'm 18 days into vegging and I've got 4-6 nodes on all of the plants.

My 24/0 is more of a choice to keep the room warm vs. really growing fast, although the plants seem to be taking off the last week or so, as where I live it's well below freezing every night and the grow room is in a garage which is only kept at just above freezing, so I was looking for easy temperature regulation to get started, and possibly faster vegging.

Once it becomes time to flower, I will have to readdress the temperature issue, but I have a couple weeks to figure that out.

Good luck!

[BlueBear]

I go 24 7 for veg always, seems to bring them along a little quicker IMO, but some do say that after the first couple of weeks you should swhich to 18-6, and I get stuff like this at 30 day flower http://boards.cannabis.com/indoor-gr...coco-coir.html
Also, 6 weeks for flower is pretty short and most strains will take 8 to 10 weeks and some even take 12 to 16 weeks believe it or not.
Adieu

[Chronic Chrissy]

I am a new grower and I am using a 24/0 cycle for 6 plants with 8 100w cfl's and 1 175w MH, and my plants seem happy. I'm 18 days into vegging and I've got 4-6 nodes on all of the plants.

My 24/0 is more of a choice to keep the room warm vs. really growing fast, although the plants seem to be taking off the last week or so, as where I live it's well below freezing every night and the grow room is in a garage which is only kept at just above freezing, so I was looking for easy temperature regulation to get started, and possibly faster vegging.

Once it becomes time to flower, I will have to readdress the temperature issue, but I have a couple weeks to figure that out.

Good luck!

Being in Manitoba (-42 right now) I understand your temp issues. I just thought I would quote the book I took the info from.

" Light Cycles

The dark cycle is very inportant to palnts. Respiration(this is when plants are making energy from sugar to oxygen) Continues in dark but at a much slower pace, almost independent of available oxygen because the leaves are not making oxygen in the dark.

In the dark there is a shift from leaf production to root production as the leaves transfer excess energy down to the branches and roots. Therefore, some dark time allows for better root structures. The "Experimental Root Growth 10 Days After Cutting" graph on page 33 shows that giving plants a 24-hour light cycle is not the way to supercharge growth"

This is from "How to supercharge your garden" With the graph on page 33 this follows...

"Light period for cuttings

PLants have a free running internal bio-rhythm of 21-27 hours. In this rhythm, they need dark time. Cuttings have a built in daily rhythm that they inherit from their parent. Cuttings will root better with a 6 hours to 8 hourdark period because this is the main time when leaves and the stems transfer energy down to the root zone for storage and growth."

The chart has hours of light per day on the bottom, and length of roots in millimeters.
-@ 4hours of light the roots after ten days were only 22mm long
-@ 8 hours of light after 10 days the roots were 25 mm long
-@12 hours of light we shoot up to 40mm long
-@16 hours it peaks at 50mm
-@20 hours it drops down to 37mm
-@ 24 hours it drops down to 29mm

There is also a shitload of info regauring root to yeild ratio vs veg to yeild ratio, and draws the conclusion that at the end of the experiements the root to yeild ratio was higher

I'll see if I can find time to pick out and dig up more.