Lights for the seedlings, 24/7 on the lights for 2 full years. After that, they live with their parents and settle into normal routine. 24 hr. light does not seem to bother them, and they get huge in just one year. As much as 12 to 14 inches high. Then going into a "normal" living arrangement with dormancy, they mature at 4 to 6 years instead of 5 to 7 years. They have never suffered any ill effects, and grow like weeds. BUG weeds!!!!!!! All sarracenia seedlings!