Pictures of bitter grass

Vallisneria is a Chinese herbal medicine, which comes from the wolfsbane of the wild plant Vallisneria. Vallisneria is a perennial aquatic woody plant that mostly grows in shallow waters and is found in most parts of China. Vallisneria contains a variety of medicinal ingredients.

Clearing away heat and removing fire: bitter grass is cold in nature and can eliminate heat and toxins accumulated in the human body.

Rapid swelling reduction: It has the effect of rapid swelling reduction and can be used for bruises.

Unblocking meridians, activating blood circulation and removing blood stasis: It can accelerate blood circulation and prevent the occurrence of bone and joint diseases. It can improve abnormal leucorrhea, eliminate dampness, eliminate long-accumulated dampness and toxins in the body, and improve abnormal leucorrhea.

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Common problems in planting Vallisneria ovata in Chongming, Shanghai:

1. Temperature: Vallisneria does not have high requirements for temperature, but if the temperature is adjusted according to its growth habits, it will grow very well. It is drought-resistant and heat-resistant, but the best growth temperature should be controlled at around 20 degrees. The main stem grows best at this temperature.

2. Watering: It is divided into terrestrial and aquatic plants. The main stem of terrestrial plants needs to be kept moist at all times and consumes water faster. If the temperature is relatively high, they need to be watered every day. Although the main stem of aquatic plants does not need to be watered, the quality of water is relatively high. There must be no weeds in the area where they are maintained, and the water must be clear. In hot weather, the branches need to be sprayed with water to prevent the leaves from drying out.

3. Fertilization: If the sludge used to maintain the Vallisneria is too thick, it means that the water body is relatively rich. In this case, no fertilizer is needed. If the sludge used to maintain the Vallisneria is relatively poor, it is necessary to add nutrients to the Vallisneria. Generally, triple compound fertilizer or potassium superphosphate should be used, and the application frequency is twice a month. After each fertilization of the terrestrial main stem, it is necessary to water it immediately to prevent fertilizer damage.

Perennial, nearly standing or lying herb, 0.3 to 1 meter tall. The stems are smooth or not. The leaves are opposite, nearly leathery, ovate or oblate-lanceolate, 3-8 cm long, 1-2.5 cm wide, glabrous on the upper side and generally pubescent on the lower side; the bracts are membranous, connate into a short sheath, with 5-7 long prickles on the top. The flowers are white, almost sessile, and rounded inside the petiole; the calyx is 4-lobed, about 2mm long, usually hairy; the corolla is about 3mm long. The lobes are 4 and bare; there are 4 pistils; 1 pistil, 2-chambered ovary, and a linear style. The silique is spherical, about 1.5mm long and wide, unbroken, and covered with stiff hairs. The flowering period is between summer and autumn.