Wait until the earth is dry. To check, scratch and feel with your fingers well below the surface of the soil. Immerse the plant pot in a container with water, for 1/5 of its height for 3 minutes.
Fertilization
Every other watering, fertilize with fertilizer for green plants, from May to September
Name
The genus is named from the Latin word for "monstrous" or "abnormal", and refers to the unusual leaves with natural holes, or fenestrations (slits) and perforations (holes), that most members of the genus have.