Kale head is not a kind of radish.

The scientific name of kale head is skillet, also known as earth skillet, eggplant lotus, bulb kale, etc., for the cruciferous family of biennial herbaceous plants. According to the bulb skin color is divided into green, green and white, purple three types. According to the length of the growing period can be divided into three types of early, medium and late maturity.

Early maturing varieties of short plants, leaves less and small, 50 to 60 days after planting harvest, representative varieties of Beijing early white, Tianjin small tassel, etc.. Medium and late-maturing varieties of strong plant growth, leaves and large, planting to harvest takes 80 to 100 days. Representative varieties are stupid skunk cabbage, Datong pine root, Yunnan long broken blue.

Morphological Characteristics

Two-year-old robust erect herb, 30-60 cm high. The whole plant is smooth and glabrous. Stem short, 2-4 cm above the ground, begins to expand and become a hard, long ellipsoid, spherical or oblate, fleshy bulb with leaves, 5-10 cm in diameter, or more; the outer skin is usually light green, but also green or purple, and the inner flesh white.

Leaves 20-40 cm long, 1/2 to 1/3 of which are petiolate; leaf blade ovate or ovate-square, smooth, whitish powdered, margins distinctly toothed or notched, usually with 1 or 2 lobes near the base; leaves on flowering stems resemble stem leaves and are smaller, with tender petioles.

Flowers yellow-white; arranged in long racemes; sepals 4, narrow and erect; petals 4, spreading as a cross; stamens 4 strong; pistil 1, ovary superior, stigma capitate. Carob long terete, beak often very short, and dilated at base. Seeds small, globose, 1-2 mm in diameter, with very small fossae.