For about 10-14 months-from wiki
Well I read that some times they live for 12 monts but in captivity they can live for bout 14 months.
About 62 days I think
They live for 12 months no more no less
They live from spring to fall
The praying mantis lives for about 3-4 months depending on the abundance of food. They die in the fall after laying their egg mass.
My lived for about 6 months laying all them fake eggs with nothing inside :'(