i had the same problem with my arjan's haze #3 femalized.

i was growing 2 plants and my brother inlaw was growing 1 plant and we both ended up with with seeds, 1 of my plants was fine and the other had seeds about 50 seeds, not many but still its seed, was well gutted cos these babys took 13 weeks to flower, still the weed tasted pretty nice.

these seeds came from the green house company.

also bought some white widow femalized seeds when i bought those and started those seeds about a month ago, all seeds popped but when they come to sprout from the pots nothing happened . finally 1 seed sprouted from the soil and the other 4 was just a no show

i wont be buying greenhouse femal seeds again.