1, when planting water iris, it is best to plant in water, although it grows in dry soil, although the growth is not as good as in water. Cultivation of the environment should have sufficient light, it is best to have more than half a day of light every day, so that the water iris can grow better. When planting, it is important to place the seedlings in a reasonable manner, so that their outer leaves are facing the wall of the container, or towards the periphery of the planting site, which can promote the growth and sprouting of new shoots, and will not grow too crowded. It likes moisture, the bottom of the bottom of the pot can be placed on the bottom of the 2-3cm of sand, and the sand should be kept above the 1-2cm of water level, to keep the bottom of the pot submerged in water.

2, moisture: it grows during the high water requirements, generally have to water every week, the soil can not be in a dry state, or growth will be affected. In the growing season, it is necessary to water every day, because at this time the lack of water, the growth will deteriorate. In the cold winter, you should reduce watering, because the soil is too wet will reduce the plant resistance to cold, which means that it is easier to be frostbitten.

3, temperature: the plant is suitable for growth in a warmer environment, so the temperature should be adjusted in the appropriate range, not less than 10 ℃, or it will pause the growth, when the temperature is lower than 5 ℃, there will be frostbite. Its heat resistance is not very good, in the summer can be put into a ventilated environment, which can reduce the temperature to a certain extent.

4, fertilizer: in the late growth of water caltrops, you should do a good job of fertilizer, nutrients enough to promote its robust growth. In the usual monthly fertilizer on the line, to the peak growth period, that is, spring and autumn, usually weekly fertilizer. However, the fertilizer should not be too strong, you should apply a thin fertilizer to avoid the phenomenon of burning roots.