Answer
A plant that needs a long period of darkness is referred to as a "short day" plant. These plants only generate flowers when exposed to less than 12 hours of sunlight. This term is considered a misnomer because "short day" plants, including Chrysanthemums, actually require longer periods of darkness instead of shorter periods of light.
Work Step by Step
A plant that needs a long period of darkness is referred to as a "short day" plant. These plants only generate flowers when exposed to less than 12 hours of sunlight. This term is considered a misnomer because "short day" plants, including Chrysanthemums, actually require longer periods of darkness instead of shorter periods of light.