Flowers bloom in different seasons due to a combination of environmental triggers and genetic programming. Plants have evolved to flower when conditions are optimal for reproduction. The main factors that influence blooming times include:
- Photoperiod – the length of day and night
- Temperature – both air and soil temperatures
- Moisture levels – adequate rainfall or irrigation
Some plants are short-day plants that bloom when nights are long (like chrysanthemums), while others are long-day plants that flower during longer days (like black-eyed susans). Some plants are day-neutral and bloom based on other factors like maturity or temperature.