When is the blooming time of the epiphyllum?

When does the epiphyllum bloom? The epiphyllum generally blooms from June to August each year. In the hot summer, when the sunset glow sees off the beautiful dusk and the clear breeze welcomes the cool night, the beautiful epiphyllum opens. A well-grown epiphyllum can have more than 20 flowers blooming at the same time. When the flowers bloom, the room is filled with fragrance that delights the heart. White flowers and green stems set each other off, beautiful for a time. Unfortunately, good things do not last long; from first opening to withering, it is only a little over 3 hours. The epiphyllum has long been known as the "fairy flower," perhaps because its rare "brief blooming" is like a fairy descending to earth!
Why does the epiphyllum bloom only after 21:00? It turns out this has a certain relationship with weather conditions. The petals of the epiphyllum are large and delicate, and certain temperature and humidity conditions are needed for it to open. During the day the temperature is too high and the air is dry; late at night, the temperature is too low again, both unfavorable to the opening of the epiphyllum. Only around 21:00-22:00, when the weather is neither too hot nor too cold, with a temperature of around 20-26°C, plus moist air with relative humidity above 80%, is it most suitable for the epiphyllum to open. Moreover, the epiphyllum is very sensitive to changes in light intensity. When night gradually falls, it senses the message that darkness is about to arrive. In this way, the buds about to open are ready to bloom, and once night comes, they bloom, and bloom for only a little over 3 hours. Around midnight, as the temperature gradually drops, the epiphyllum begins to shrivel, thus avoiding damage from high and low temperatures during its blooming period.