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Name: Kat
Status: n/a
Grade: other
Location: SC
Country: USA
Date: Fall 2011
Question:
My yellow columbine flowers are constantly opening and closing throughout the day AND the night. I can't find a single thing on the internet that says columbines are supposed to do this. Is something wrong with mine?


Replies:
Flowers can open and close depending upon environmental conditions (light, temperature, humidity).

Also: http://www.newton.dep.anl.gov/askasci/bot00/bot00249.htm

http://www.bigsiteofamazingfacts.com/why-do-flowers-close-up-at-night

http://aob.oxfordjournals.org/content/82/1/67.full.pdf

Anthony R. Brach Missouri Botanical Garden & Harvard University Herbaria


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