Why are my females flowering??

Hi all.I have a problem(obviously).i have taken many cuttings from a female purple haze plant and am now in week 3 of flowering.Although all 4 have started to bud really nicely i am having to pick off these little flowers that are appearing..im hoping it isnt too late as some of them seem to have already opened..any ideas why this is happening?
Should i destroy the mother plant and start again?Please Help..Thankyou.

Secret Jardin dr120w
400hps
carbon filter
2 x 5" fans
In Premix soil from grow shop
all top brand plant foods etc
12 hrs on 12 hrs off

3 weeks and you have flowers... not a good sign. Sounds like a Hermi. A true Female will sometimes shoot out some flowers (mine have), but that is much later into the bloom cycle as the female is trying to keep the lifecycle going in its own. If you have lots of flowers... your buds are gonna suck and you will have pollen everywhere.

Kill the plant... and don't forget to clean the bloom room.

Good Luck.

All 4 plants had a few flowers on them before i removed them.Could the mother plant i am using be a hermy which would produce more hermies everytime i take a cutting?