We grow our pepper seeds in an indoor climate with no regulated hours of sunlight, no wind, or cold nights. Therefore, hardening off is the process of gently preparing your young plant for life in the outdoors. This could take some weeks, so start some weeks before you move them outdoors. It isn't a strict schedule; it simply involves getting the pepper plant outdoors for longer periods each day. However, keep a close eye on the growing plants as intense heat could cause them to wilt.