1. A hypothetical plant hormone or signal that promotes flowering; the substance or signal that triggers the transition from vegetative growth to reproductive growth in plants.
Usage: biology; botany; often used in scientific research and plant physiology contexts; plural form of florigen

Examples

• Scientists have long searched for florigens to understand how plants know when to bloom.
• The discovery of florigen-like molecules has advanced our understanding of plant development.
• Researchers believe florigens travel through the plant's vascular system to trigger flowering.
• Different plant species may produce different florigens or respond to different signals.
• The study of florigens helps explain why some plants flower in spring while others flower in fall.