What is the name of the purple flower that looks like leek on the grassland?

What is the name of the purple flower that looks like leek on the grassland?

Balloon flowers,

The flowering of platycodon grandiflorum,

Alias bell flower, monk's hat, bitter root vegetable,

Pedicularis, tomato, Polygonum Multiflori Radix and Baiyao.

It is a perennial herb of Platycodon of Campanulaceae.

Stems are 20- 120 cm tall, usually glabrous,

Even densely short-haired, unbranched, with few branches above.

The attached drawings are for reference.

Calyx tube hemispherical or spherical inverted cone, covered with white powder, lobes triangular, or narrowly triangular, sometimes toothed; Corolla is large, 1.5-4.0 cm long, blue or purple. The capsule is spherical, or spherical inverted cone, or inverted oval, with a length of 1-2.5cm and a diameter of about1cm. The flowering period is from July to September.

Platycodon grandiflorum is a deep-rooted plant, a perennial herb perennial flower, which is mostly wild in the grass on the hillside. Its roots are plump and fleshy, cylindrical, unbranched or less branched. The taproot can be as long as 15 cm. The stems are erect, with a height of 0.5 ~ 1 m, the whole plant is milky white, and the upper part is usually unbranched or slightly branched.

Born in the grass and bushes in the sun below 2000 meters above sea level, less born in the forest. More resistant to high temperature and cold, but not to cold and heat.

Platycodon grandiflorum is not strict with climate and environment, but it is suitable for mild and humid environment with sufficient sunlight and rainfall, and can resist cold.