how much of the babie do i plant??

Wait a bit longer, and each baby will start to develop little roots. Then just cut it off from its stem. Good luck.

thanks again!!

I tend to stick mine in water with liquid feed to start with just to get the roots growing well and then pot

I created 13 new plants from one spider plant last year and took them all into work for my friends to help themselves. They were snapped up in less than 5 minutes and now there are more babies on the way! I waited until the babies were about 2", then took them off and popped them in a glass of water for a couple of days before popping them in their own little pots. Some of them are still in the office and doing really well.
Unfortunately I left the mother plant out in our garden too long last year and the frost got to it....R.I.P Mama Spider Plant.

these look like the developing white flowers and not the babies.
welcome to GoY too.