Brief introduction of Han xincao

Korean heart grass is also known as dig grass, golden teaspoon grass and toothbrush grass. Leaves opposite, oval to linear-lanceolate, peanuts in axils, pink and purple. Wild Chinese herb is common in fields, streams and sparse forests. Therefore, chilling grass prefers to be cultivated in moist, shaded or partially shaded environment, and the requirements for soil are not strict, so loose and fertile sandy loam is suitable. The optimum temperature for germination is 18-22℃, because the seeds are small and the soil is thin, and they germinate in about a week. A small amount of nitrogen fertilizer can be applied in the early stage of growth, and more phosphorus and potassium fertilizer can be applied before flowering to promote the growth and flowering of trees. Because Chinese new grass grows vigorously, there are few pests and diseases. The following small series introduces the ecological habits and morphological characteristics of Hanxincao for everyone.

Cold grass is mostly used for potted flower and flower bed cultivation, and can also be used for garden and ground cultivation.

Ecological habits of chilling grass

Cold grass likes warm and humid climate and should be cultivated in loose and fertile loam or sandy loam with good drainage.

Mimosas grow mostly in wet places near ponds, fields or roadsides. Distributed in Jiangsu, Guangxi, Guangdong, Sichuan, Hebei, Shanxi, Shaanxi, Hubei, Anhui, Jiangxi, Zhejiang, Fujian, Guizhou, Yunnan, Taiwan Province, Henan and other places.

Morphological characteristics of chilling grass

Mimosa is a perennial herb with full hair and a height of 10-37cm.

Han xincao has opposite leaves; The petiole length is 5- 15 mm; The leaves are herbaceous to papery, heart-shaped ovoid to ovoid, with a length of1.5-3cm and a width of1.2-3.2cm, and the apex is obtuse or round, with dense hairs on both sides.

There are 2 flowers in Hua Lun, which are connected with the lateral terminal inflorescence; Bracts ovoid, pubescent on both sides; Peduncle base has 1 pair of setose bracteoles; Calyx bell-shaped, about 2 mm long, sticky outside, with 2 lips, entire, and 1 cystic shield scale on the back of calyx tube; Corolla is blue-purple, 2-lipped, about 19mm long, glandular and pubescent, the top of the upper lip is slightly concave, the lower lip has 3 lobes, and the middle lobe is round and ovoid; Stamens 2 pairs, not prominent; Style slender, ovary smooth, 4-lobed.

Nutlets are transverse, ovoid and tuberous.

The flowering period is April-May and the fruiting period is June-September.