Skirret is a perennial vegetable which dates back to Roman times. Related to carrots its the bunches of skinny white roots that is the edible portion. Doesn't like been grown anywhere too dry and are slightly vulnerable to carrot fly. Roasted its a very tasty vegetable. Sow in spring time and treat the seedling like carrot seedlings by keeping them keep weed free and at a spacing of 20cm apart, they seem to take for ever to get to a descent size. Roots develop there full flavour during winter.