Foxglove is an annual or biennial herb, relatively low, about 60-120 cm in height, usually solitary, covered with gray-white pubescence, sometimes smooth on the stem.
Althaea rosea is a biennial erect herb, which is different from the former from the root. Its plant type is relatively high, up to about 2 meters, and the stem is densely distributed with bristles.
The leaves of foxglove are ovate or oblong, about 5-15 cm in length, with mucronate crenations on the margin, no lobes on the leaves, and short or even no petioles.
The leaf shape of hollyhock is nearly circular, about 6-16 cm in diameter, palmately with 5-7 lobes, the shape of individual lobes is triangular or circular, and the petiole is relatively long, about 5-15 cm long.
Foxglove's flowers are bell-shaped, very close and regular, purplish red, with spots inside.The individual flowers are small and have only one layer of petals.
Hollyhock flowers are relatively large, arranged in racemes, many colors are purple, white, pink, red and so on.