When to go from 18/6 to 12/12?

[tadaa]

I've identified my 3 plants as all females( I ordered female seeds), they are about 9 inches tall and appx. 4 weeks old. When should I go to 12/12?

[turtle420]

When you get alternating nodes...

[tadaa]

When you get alternating nodes...

What exactly do you mean?

[turtle420]

What exactly do you mean?
The leaves on your plant right now are growing one on each side of the stem...

"Alternating Nodes" is when the stem has one leaf on its left, then, a little further up, a leaf on its right.

[tadaa]

The leaves on your plant right now are growing one on each side of the stem...

"Alternating Nodes" is when the stem has one leaf on its left, then, a little further up, a leaf on its right.

Do you have a pic of this by any chance?

[TheBrains]

hey not trying to steal ur thread but I got a quik question for u tadaa since u seem like u got knowledge ;p

my babys 4 days old bout 1 inch no stretching "lights have been on whole time" 24" floro with hood should I give them some darkness?

[Harvesthetic]

Pre-flowering is a sign that your plant is mature enough to
start flowering. As a grower you have a simple choice to make. Do you
want to flower now? Or do you want to continue vegetative growth?
Here are a few facts before you make that choice.
- Some cannabis plants can be kept alive for up to 10 years by simply
keeping a light on the plant at all times. These plants will grow to a
certain height and then form into a bush. It will then eventually stop
producing branches and will spend the rest of its life growing new
leaves to replace the old ones.
- Bud production is not equal to the height of your plant. Bud
production is equal to your growing environment, your strain's genetic
make-up and the amount of nodes that the plant has. All nodes are
potential bud areas, but every strain has a genetic threshold for bud
production.
- It is possible to get more bud with lots of plants which are flowered
as soon as they are mature (which also keeps them shorter and
smaller), than extending vegetative growth with less plants until they
reach their maximum height and size. The time frame for the shorter
option may also produce more bud turnover per annum.

Keeping these things in mind, you can either choose to flower
now or choose to keep your plant growing until it reaches its size
threshold before you start flowering. If you take the longer route then
prepare to have the space for it, because when you flower most
cannabis strains they can sometimes more than double in height and
width.
If you have pre-flowers and want to flower you only have to
do one thing. You must put your plants under a 12/12 schedule.
(from the cannabible, it's downloadable)

oh yeah, and these are alternating nodes (not a weedplant)

[TheBrains]

very usefull info thank u bro

[MarijuanaMike]

I've always just used the old double the size measurement. Once put into flowering it normally doubles in height.

I.e. If its 2 feet tall after 6 weeks of veg and then put into flower it should roughly only grow to around 4 foot.

[turtle420]

I've always just used the old double the size measurement. Once put into flowering it normally doubles in height.

I.e. If its 2 feet tall after 6 weeks of veg and then put into flower it should roughly only grow to around 4 foot.
Definitely... I'm on my 1st grow, so I don't have that much experience, but the general number I've seen is that the plant will grow from 2 to 3 times its veg height. So carefull you don't end up with a tree... ;)

[smoknjoe]

When you get alternating nodes...

Alternating nodes is a sign that the plant is mature, but doesn't mean you have to flower. You can keep going at 18/6 for as long as you like (space permitting) keeping in mind the plant will double in size after switching to 12/12.

To answer your question more directly, you can switch to 12/12 whenever you want, as long as its not still a baby.

[MarijuanaMike]

'Ark at me...."Ive always used...."

I've only grown once before :p

[smoknjoe]

Heres another nice example of alternating nodes on a pot plant.

[MarijuanaMike]

Here is a pic of one of my plants from my first grow....you can kinda see it on the first one and the second one is a few weeks into flowering

http://img334.imageshack.us/img334/8669/296qm.jpg

http://img168.imageshack.us/img168/1682/554kb.jpg

[tadaa]

Here is a pic of one of my plants from my first grow....you can kinda see it on the first one and the second one is a few weeks into flowering

http://img334.imageshack.us/img334/8669/296qm.jpg

http://img168.imageshack.us/img168/1682/554kb.jpg

So the first pic is right when you switched to 12/12?

[J DOG 6000]

Just flower it when it is half the hieght you are trying for.
Simple

[mand]

Hello tadaa :) J DOG said it all there love ;)

I usually like to have plants at about a yard (metre) in height at harvest so I usually start to induce flowering at about 18 inches (half a metre) in height;)



love mand xxx:)