These have grown really fast. I think they are pretty cold hardy, so I hope I can plant them out in a cold frame in March.
I got this mix from Territorial. They describe it as:
30 days. Gardeners who love to grow edible ornamentals will go crazy over this exciting mix. A fabulous array of Siberian kales of unique shapes and hues. Diverse leaf profiles range from delicate waves to tight frilly curls. Color shades from light greens to blue-greens to purples and reds. Up to 24 inches tall, these kales are mild and very cold tolerant. A winter salad gardener's delight30 days! No wonder its growing so fast.