Soil Type and Fertilizer
Choosing the right soil type is extremely important. In case of this night-blooming plant, it is advisable to use soil that is slightly acidic. You can use a potting medium that has peat moss, sand, and pine bark in the ratio of 2:1:1. Also, make sure that the soil is well-drained. This plant will grow better if it is slightly root-bound. The soil can be amended by applying a fertilizer. You can use organic matter to replenish the soil, or apply a balanced 20-20-20 liquid houseplant fertilizer or a fertilizer that contains less nitrogen. Apply the fertilizer once a month from spring through fall. Dilute the fertilizer to ensure that the plant doesn’t get excess nitrogen. Excess nitrogen can cause the stems to grow, while reducing the number of blooms. Application of fertilizer can be avoided during winter and late fall.
Water the Epiphyllum oxypetalum plant regularly during summer. From spring through fall, water the plant every two weeks. Water the plant thoroughly until water drains from the bottom of the pot. Allow the soil to become slightly dry before you water the plant again. At the same time, excessive watering can cause damage to the root, making the plant susceptible to root rot. During summer, when the temperature becomes higher than 70°F, you can increase humidity by placing a water container around the plant or using a humidity tray. This plant will do well in 50% humidity. Reduce the frequency of watering during winter. Mature plants can survive even if they are watered sparingly during winter.