I am not an expert but everyone seems to say that 50 degrees is the cutoff for nightly temps unless it is just barely dipping below that once in a while. Prolonged temps under 50 are considered bad. I live in zone 4 and wont be able to leave mine outside for another 5 weeks or so. Bhuts seem to be more temperamental with cold than most other peppers. Personally, I will probably force my peppers to endure a little bit of the 40's though.

I have tried rushing the season and ended up with stunted plants. Plants started late and put out in warmer temperature caught up to and often surpass those put out early. If you are growing in pots, as I do, you can put them out on warm days and bring them in at night until temps stabilize.

Fiedlermeister: Where are you located and when do you get your peppers outside in the containers they will spend the summer in?

I live in Maine and have grown a lot of varieties over the past 13 years. I grow most in 12 inch pots because the soil gets warmer than in the ground and I can put the pots in the sunniest spots ( I live in the city). I started my seeds a few days ago. I will keep them inside under fluorescents until near the end of may and then start taking them outside for increasing lengths of time until they stay out all day and bring them in at night. When the nights get warmer I leave them out but retain the option to bring them in if it turns cold. I aim for the second week in June to put them in their final pots outside. In the fall I bring them into the garage for the first few frost nights ( we usually get a few more weeks of frost free weather)until I get tired of moving them and bring inside to finish ripening any that need it. A challenge to grow them in this climate.

I started documenting them in 2003

Here is a link that might be useful: My PBase site

John (Fiedlermeister) is one of the heavy weights at this Forum...he's an invaluable resource.
Not only has he grown the gamut - he's also documented plants, flowers, and pod variations.

Helped me narrow down my Thai chiles a couple years ago, too.

Josh

Thank you, Josh. I've been doing a lot of hiking and lost 20 pounds :)

Hehe... ;-)

Josh