Mustard pimples are about 60-150 cm high, the whole plant is hairless, a slight layer of frost, the tuberous root is conical, about 7-10 cm in diameter, the color of the outer skin is white, and the root is fleshy, yellow or white, and it will smell spicy.

Kohlrabi is much shorter than the former, probably about 30-60 centimeters tall, with a shorter stem that begins to grow into a fleshy bulb about 2-4 centimeters above the ground, elongated ellipsoid, oblate, or spherical. The outer skin color is usually light green, but also purple and green, and the inner flesh is white.

2, leaf difference

Mustard pimples have a few basal leaves, about 10-20 centimeters long, young is a few prickly hairs, the top lobe is broadly ovate, the tip is rounded, the edge will be serrated, stem leaves are similar to the basal, the upper part of the oblong lanceolate, entire, sessile.

Kohlrabi leaf blades are broader, about 20-40 centimeters long, ovate-matrix or ovate, covered with a layer of white powder, with a more pronounced serration or notch on the edge.