I've had this lobo for a while now and it is a very very slow grower. Grows somewhat the same as a candy cane and i've had the same single head since i bought it more than a year ago.
I've had a lobo for about two years now and it has grown a lot. I feed it chunks of rods food every 3 weeks or so, it's only a single head but it's over 6 inchs across.