Ok...I have been growing pitcher plants for a while and started growing VFT two years ago. I have noticed that the majority of my VFT for the most part stay green even in the winter. They are grown in a bog and stay outside year round in my zone 7 garden. I lightly mulch with pine needles, maybe a couple of inches. Anyone know why they don't turn black or is it normal for some to stay green but be dormant and others just to turn black.