What are short-day and long-day plants?

CORVALLIS – It’s discouraging when your lettuce bolts or you can’t get your mum to bloom. There’s a reason for that, and it’s all about day length, which determines or how much light the plant gets. To understand plant flowering, you need to get a handle on “photoperiodism,” or amount of light and darkness a plant is exposed to. The amount of uninterrupted darkness is what determines the formation of flowers on most types of plants, according to Oregon State University Extension Service horticulture experts.

How do you grow plants - The effect of light on flowering

Gene expression analysis related to ethylene induced female flowers of cucumber (Cucumis sativus L.) at different photoperiod

Love them or leave them: Fruit trees take plenty of work – Plant Something Oregon

Photo periodic Categories of Plants - video Dailymotion

1970 v16 No 3 Fall

File:Long Day Plants.jpg - Wikipedia

Plant Growth Development - Practically Study Material

Even if it's warm enough, day length will stall winter veggie growth

Browse resources OSU Extension Service

Plants: Part 3 - Photoperiodism and Flowering, Plant Response to Biotic Stimuli

Plants change their clocks to flower at the right time

What is photoperiodism and how is it used in flowering ? - ppt download

What are examples of long day plants? - Quora