Let see...I start putting my hardier plants (Saracenia & VFT's) outside when weather starts warming up. Like around 40° or warmer. If the temps drop quick, VFTs, some dews and Sarras can handle a light frost with little problem. Once the overnight temps stay above 40°f or so, I leave all my plants outside 24/7. My N. ventricosa (I have three) are hung in my apple tree where they get dappled light and all the bugs they can catch.