Tall larkspur is a common name for several flowering plants and may refer to:
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Delphinium barbeyi
''Delphinium barbeyi'' is a species of flowering plant in the buttercup family known by the common names subalpine larkspur, tall larkspur, and Barbey's larkspur. It is native to the interior western United States, where it occurs in the states o ...
'', native to the western United States
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Delphinium exaltatum'', native to the eastern United States
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