Quote Originally Posted by alienhybrid
How tall should they be before they flower? I see some people have 2-feet some have 10-inches.... is there a general rule?

Also is a 1-gallon pot too small? I have mine in 1-gallon pots and my biggest one is now about 14-inches tall......

I have seen anywhere between 1-4 gallons as being acceptable....
No, there is by no means a rule at all, but of course, the shorter the vegg time, than smaller plant=smaller yeild.

I have flowered plants when they were only 6inches in height. I only got about 8grams from that plant, but I grew it only in a 1-gallon container, and with enough space, I could cram 30+ plants in a 4 x 4ft space.

You might want to consider transplanting to a bigger pot if your plant is already just over a foot in height. By the time it's done flowering, it will be close, maybe even over 3ft in height.

My finishing height of my plants are usually around 2ft. I keep things short and stalky, and when the seed first pops open in paper towel, I transplant into only a 4inch x 4inch container, until about 4 weeks from seed, I then transplant into its final home in a 3 gallon container.

In your case, you might want to transplant into a 3-5 gallon container. You want to give your plant plenty of room to grow, even if it doesn't use it all up. The more space, the bigger the outcome.