Wikipedia
Kalette
Kalette is a hybrid plant, derived from a cross between kale and Brussels sprouts. The plant is touted as being a highly nutritious vegetable that may be eaten as raw or cooked.
Its flower-like florets are open to about two inches in diameter. Three bicolored varieties are planted for different harvest times: for early-season, mid-season, and late-season harvests. Decorative florets are optimized when planted in fertile soils with a pH above 6.5-7.5. In dry weather, the plants require careful fertilization and regular irrigation.
The hybrids were debuted by Tozer Seeds in England. Now, several U.S. vendors, such as Johnny's Selected Seeds, also distribute kalette seeds.