Ensure adequate and regular water supply. In addition to September and February, plants need to be kept dry, and the soil should be kept moist frequently in other seasons. Hewanglan is afraid of waterlogging in the cultivation area, because the fleshy roots can resist drought, but they are afraid of waterlogging.

Hopewell needs more fertilizer. If planted in a place with poor soil quality, into the pit can be used as decomposed fertilizer or slow-release fertilizer. Top dressing every 7 ~ 10 days after planting, with 0.05 kg compound fertilizer per square meter. After flowering, 0.02% potassium dihydrogen phosphate should be supplemented once a month in the first two months of flowering, and half of it should be applied to the soil or topdressing outside the roots. In the growth period, organic liquid fertilizer is mainly applied, supplemented by compound fertilizer or potassium dihydrogen phosphate (0.2% concentration), once every half month, especially when new leaves grow, because there are more new leaves and more flowers. Until the buds appear. Stop fertilizing at flowering stage.