Castor does not allow the planting of reasons:

1, toxicity

Castor is a stout annual herb or herbaceous shrub, the whole plant contains toxicity, not only on the water quality has a greater impact on the water supply will be contaminated, but also people accidentally eaten will also be poisoned, therefore, to reduce the planting of castor. To reduce the planting of castor.

2, environmental discomfort

Castor mostly grows in high-temperature areas, high temperature requirements, like acidic, alkaline soil, the adaptability of the environment is not strong, very easy to die, so now very few people are planted, and even not allowed to plant.

3, appearance characteristics

Castor monocarpus alternating, leaf blade is peltate-orbicular, panicle and leaf opposite, under the plant grows male flowers, petal sex homozygous, filaments are more branched, the color of crimson, and castor will grow fruits after maturity, the fruit period in July-October.

4, growing environment

Castor is a deep-rooted crop, native to Egypt, Ethiopia and India, widely distributed in the tropics, and castor intolerant of frost, when the temperature is lower than 10 degrees Celsius, the plant will die.

Growth habit:

Happy with high temperature, frost intolerance, acid and alkali adaptability, widely cultivated in China. Plain areas can be planted. Elevation 20-500 meters (Yunnan 2300 meters above sea level) village side of the open forest or river banks alluvial land often escape for the wild, was a perennial shrub. Castor is a deep-rooted crop. When the temperature stabilizes at 10 ℃ can be sown. Can also be transplanted seedlings.

Native to Egypt, Ethiopia and India, later spread to Brazil, Thailand, Argentina, the United States and other countries. Widely spread in tropical areas around the world or cultivated in tropical to warm belt countries. Cultivated in China as a grease crop is an annual herb.

Chinese castor introduced from India, from Hainan to Heilongjiang 49 ° north latitude south of the distribution. North China, Northeast China, the most, followed by Northwest and East China, and other sporadic plantings. Tropical areas have semi-wild perennial castor.