The planting time of okra okra likes warmth, afraid of frost. The entire growing period should be arranged in the frost-free period, and the flowering and fruiting period should be in the warm and humid season everywhere. Open field cultivation, north and south regions April-June sowing, July-October harvest. North China is generally sown in mid to late April to May. Cold regions in the north often use solariums and plastic greenhouses to raise seedlings, which are then planted in the field in early spring after a late frost. Okra from sowing to the formation of the first young fruit takes about 60 days. Later, the whole harvesting period is as long as 60~70 days, and the whole growing period is about 120 days. Okra planting season okra in the Yangtze River Basin and South China can be planted in the spring, summer and fall, but mainly planted in the spring. sown in March-April, harvested in May-September; sown in May-June, harvested in July-October; sown in July, harvested in September-November. Early sowing is suitable for greenhouse, small arched greenhouse or ground cover cultivation, and the season is mainly cultivated in the open ground. Okra, also known as tonic kidney, okra, pig shit beans, belongs to the mallow family, genus Millet. Okra is mainly eaten with fresh fruits and has stomachic and laxative effects. It is a nutritious and healthy vegetable. In addition, the flowers, seeds and roots can be used as medicine to treat malignant sores and carbuncles. Okra, alias, okra, also known as unicorn bean. Mallow family, corn. Native to Africa, the Middle East, India, Sri Lanka, Southeast Asia and other tropical areas, is widely cultivated as one of the main vegetables. The tender fruits of okra are tender and smooth, and can be fried, boiled and cold. Not only is the young fruit edible, but its leaves, buds and flowers are also edible. The seeds of okra are high in potassium, calcium, iron, zinc and manganese. Its dried seeds can also be extracted for oil and protein. It can also be used as a coffee substitute or additive. Its flowers, seeds and roots can be used as medicine. It is effective against malignant sores and tumors. Okra is nutritious and the young fruits contain a large amount of viscous juice that has a special flavor. Its juice is a mixture of pectin, milk polysaccharides and arabinogalactans. Its pectin is soluble fiber, which is highly valued in the new concept of modern health care Anyone who eats it regularly has the effect of strengthening the intestines and stomach, nourishing yin and strengthening yang. It has been determined that each hundred grams of young fruit contains 2.5g of protein, 0.1g of fat, sugar 2.7g, cellulose A660 international units. Vitamin B10.2 mg, vitamin B20.06 mg, vitamin 44 mg, calcium 81 mg, phosphorus 63 mg, iron 0.8 mg, is the ideal high-grade green nutritional health care vegetables in the new century. In recent years, it has become Japan, Taiwan Province of China, Hong Kong and other countries and regions of the popular vegetables, known as the "king of vegetables.