I bought these too late in the season for planting in zone 8A, but I was so excited about them that I tried anyway. I've never seen a pepper plant so productive and cold hardy. Despite me planting these so late in the season, I'm still getting a harvest from them -- at the end of November, and these plants are not showing any stress at all from the cold nights, and still enjoy the warmer days. I'm very happy with them. They're a little harder to germinate than other peppers I've planted, so use a covered, bottom watered seed tray on a heating mat with Coco coir. They're plenty hot enough for me. Eating one whole fresh pepper, I experienced about 20 minutes of respectable heat without using a chaser.