1. Temperature: I like to grow in warm places, not cold-resistant. The minimum curing temperature should not be lower than 1 degrees, and plants will stop growing below 1 degrees. The optimum baking temperature is between 15 and 25 degrees, and plants grow best in this temperature range. 2. Watering: it needs to grow in water. From the time when the bell stands to the time when the seedlings take root, there should always be water in the ground, which is conducive to rooting. After the plant takes root, gradually deepen the water layer and leave the water surface on the top of the plant. If the temperature drops to zero, the water layer should be deepened to 4 cm to 6 cm, leaving only a few blade tips on the water surface. 3. Fertilization: Its growth consumes a lot of nutrients. After 15 days of successful planting, it is necessary to start topdressing, * * * topdressing for 3 times with an interval of 15 days. It is best to use potassium hypochlorite in September, which can increase the weight of stems. 4. Illumination: Its growth needs plenty of sunshine. Five hours of light every day is enough. The light can't be too strong, which will affect the quality of plants < P > 2. Cultivation skills

1. Propagation: The propagation of Oenanthe javanica requires asexual propagation of seed stems. In August, the seed stems should be harvested from the reserved fields, and the plants with a transverse diameter of about 1 cm at the base should be selected to accelerate germination. Its germination temperature is 25 degrees, so it is best to choose a shady and ventilated place to germinate and remove the top of the selected stem. Then tie it into a round bundle with a diameter of 3 cm and cover it with a layer of fresh grass to ensure humidity. Throw cold water on it while playing. In about ten days, they will take root and sprout, and they can be planted when the temperature drops below 3 degrees in August. 2. pruning: after 2 days of planting, plants should be pruned to remove branches that are not growing well

3. problem diagnosis

1. pests: the main pests in their growth period are aphids and cabbage caterpillars. Attention should be paid to pest control at the end of September, because this is the high incidence period of pests, so it is necessary to use Kuaishaling EC for spraying treatment. 2. disease: if the leaves of plants are dry, it is mostly caused by insufficient fertilization, so it is necessary to increase the amount of fertilization

4. Other problems

1. Toxicity: non-toxic. 2. Edible: Edible.