This grower is sure of this plant identification.
Unusual Spanish heirloom. Grows like a kale. It can be grown as short lived perennial.
Cabbage, Wild cabbage, Broccoli, Kale, Swede, Cauliflower, Brussel sprouts, Turnip
Brassica genus (Cabbage). These are annuals, evergreens, biennials and perennials. They are mainly edible vegetables i.e. cabbages and species of kale.
They are fully hardy and will grow in a sunny position in fertile well drained soil. Lime rich soil is recommended though not essential.
Grown for their vegetables and ornamental foliage.