Quote Originally Posted by stinkyattic
Your plant is showing that it is sexually mature. That's all the alternating nodes mean. You may now flower it if you like.
I always wait for the preflowers to show before flipping the lights.

It makes sense that a plant from seed will show alternating nodes when sexually mature, then the clone will show it from the beginning since it is already a mature plant.

I thought it had to do with the plant reverting back into veg. I learn something new everyday here!