I've seen twins in a single seed before, but normally it's one seed = one plant. My guess was that your soil had been contaminated with other seed..?

Either way, not a good situation. I'd suggest plucking out everything that isn't your pot plant. Pics would be cool too.
Orzy Reviewed by Orzy on . help! planted 1 seed, have 15 sprouts! no joke recently planted one seed, now i have 1 plant about 3 inches high and 14 other smaller plants about 1/2 inch or so. is this normal?? same situation in 3 other pots Rating: 5