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Kendall County (IL) Forest Preserve District Common
Cocklebur (Rough Cockleburr) The
non-native (tropical) Common Cocklebur is common in our area. It prefers full
or partial sun and moist to slightly moist loamy or sandy
soil in disturbed or poorly drained areas such as cropland (especially corn
fields), vacant lots and waste areas. It is a coarse, rough, pale green annual
that becomes about 2-4' tall and little branched, except for short side stems
developing from the leaf axils. The alternate long-stalked leaves are up to
8" long and 6" across and coarsely toothed. A single green
spike-like
raceme of composite flowers develops from the axil of each upper
leaf as well as at the tip of the central stem. The upper
(female) flowers contain 2 pistillate florets that are nearly enclosed by a
green prickly floral bracts that later become blimp-shaped
seedheads (burs).
Common Cocklebur at Shuh Shuh Gah Canoe Launch August 28, 2013
Common Cocklebur at Shuh Shuh Gah Canoe Launch August 28, 2013
Common Cocklebur burs at Pickerill/Pigott Forest Preserve October 29, 2014 The burs cling to clothing and fur making them a nuisance for both people and animals. Click here for more information. Copyright © 2011-2017 by Kendall County Forest Preserve District. All Rights Reserved.
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