man ive grown a lot outdoor.flower can handle rain for days if they dry after. space the plants out ,or prune so leaves are not crammed to geather.about 4 or 5 weeks into flower spray whole plant,drench with 1part milk 10 parts water and you willlhave no prob with powderey mildew. I folar feed flowers like every 3 rd day un till last week of flower,inside or out.