I had this happen as well. Photos are in my grow log and this thread. I planted 4 seeds thinking maybe I'd get 3 and I got 5 plants out of it, which I do NOT have room for. That little "twin" has been gravely mistreated but it's doing well all the same.

Be sure to separate them out before the roots entangle.
PlainJane Reviewed by PlainJane on . 2 seedlings in 1 seed? i recently bought some fem. PPP from nirvana and yesterday they came up through the soil. one of the seedlings appears to have a smaller seedling growing right next to it. Are there advantages or disadvantages of getting a plant like this? and no i didnt accidently put 2 seeds in one pot. Rating: 5