Well, go to Grow Shop Alien or Nirvana's Site and they have a list of strains bred specifically for indoor and outdoor: Let me check...they have as indoor outdoor two good strains...master kush and afghani (both potent and reliable), Top 44 has huge yields...outdoor strains listed are KC 33x Master Kush, Swiss Miss, Early Special, Early Girl, and Early Misty...Early Misty is listed as their most potent outdoor plant...hope that helps...I'd go with with either Afghani or Early Misty personally.