How long on average can I expect my 3 head acan lord to start growing and creating new heads? I haven't had my success in growing lps, keeping them healthy but not multiplying except my Duncan. It's taken about 8 months for my Duncan to go from 2 heads to just now the 6th head is growing. Hammer hasn't budged from 2 heads in about a year and my Frogspawn is still new also, less then a month with only 1 head.