earliest you can flower

[jammin26]

how old does a plant grown from seed have to be before you can flower it?

[RhinoGrowUK]

I like 4 weeks for a 50/50Indica plant!!
I think it depends on the strain , but then again i also think it really is up to you when you induce flowering.

[jammin26]

so there is no real minimum time before you can flower? that is wicked!

[stinkyattic]

If you flower too early it can be stressful.
Remember that the seed in nature sprouts in spring, and gets a summer of long days before the onset of fall, and the shortening of the light hours, trigger its flowering response.
It is best to allow a plant to at least reach sexual maturity before it is flowered. The vast majority of strains will show this in the form of nodes that begin to alternate, rather than having a pair of leaves come off the same spot on the stem.

[jammin26]

it must be past the 8th or 9th node before they start to do that then which is 2months at least.

[RhinoGrowUK]

Although if you get yourself an auto flowering strain you dont need to worry about it !!