I grow 100's, mostly in the greenhouse, 4" to 16" diameter plants,
difficult to separate, cut your hands badly but is fastest way,
ants love to make colonies under roots,
slow to root and make a decent size to sell,
thats why they they sell for so much, especially for a larger plant,
a 12" full dome is 7+ years old,
slow but steady, it even grows like a turtle
neon green flowers February thru May, only a few at a time
Bob Cactus Wholesalers -
[email protected]
that it was very noticeably a Baja Banner. I would also agree with all the comments... 
