This variety of sunflower has more florets that make seeds and fewer that make petals.
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Sunflowers and petals
Credit: John Burke, UGA
The most common wild sunflower variety is shown in box A, and its florets are shown in B. Box C shows a double-flowered mutant variety, with its florets…Read More »
shown in D. Box E shows the tubular variety, with its florets shown in F. The arrows in box G indicate the double-flowered mutants depicted in van Gogh's Still Life: Vase with Fifteen Sunflowers. Less «
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Field of sunflowers
Credit: image by Agricultural Research Service, public domain
When not being attacked by small children, immature sunflowers are able to orient themselves toward sunlight.
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How to Make Busy Bees Busier
Credit: Sarah Greenleaf
A wild bee (the bumble bee Bombus vosnesenskii) and a honey bee forage together on a sunflower. Honey bees that interact with wild, native bees are up…Read More »
to five times more efficient in pollinating sunflowers. Less «
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Jennifer Welsh graduated from the University of California, Santa Cruz's Science Communication graduate program after working at a start up biotech company for three years after getting her Bachelor of Science in Biological Sciences from the University of Notre Dame. She has worked at WiredScience, The Scientist and Discover Magazine before joining the Live Science team.