What are the differences between short day plants and long day plants?

Answer 1

A long day plant requires fewer than a certain number of hours of darkness in each 24 hour period to induce flowering. These plants typically flower in the late spring or early summer as days are getting longer.


Short day plants flower when the night is longer than a critical length. They cannot flower under the long days of summer. These plants generally flower in late summer or fall, as days are getting shorter. Short day plants will not flower if a pulse of artificial light is shined on the plant for several minutes during the middle of the night; they require a consolidated period of darkness before floral development can begin. Natural nighttime light, such as moonlight or lightning, is not of sufficient brightness or duration to interrupt flowering.

Answer 2

Short day plants flower when the daylight hours are shorter than a critical length, while long day plants flower when the daylight hours are longer than a critical length. Short day plants require a period of uninterrupted darkness to initiate flowering, while long day plants require a certain amount of daylight to trigger flowering.

Answer 3

Short- need a lot of night

long- need a lot of day.