1, Welsh onion: the roots are white and string-shaped, and the lateral roots are few and short. The number, length and thickness of roots increase with the total number of leaves. Stems are extremely short, spherical or oblate, solitary or clustered, 1 to 2 cm thick, with white skin, membranous and unbroken. Multilayer tubular leaf sheaths are attached to the upper part, and fibrous roots are densely distributed in the lower part.
2. Onion: Its plant height is 30 to 50 cm. The stem is short, accounting for about 4-5 of the whole plant height. Bulbs are not swollen, slightly thicker than scallions, and the leaves are tubular and small, hollow, with four to five leaves on a single branch.
3. Garlic seedling: The leaves are basal, solid, flat, linear and lanceolate, about 2.5 cm wide, and the base is sheath-shaped.