PlantsXanthium→Cocklebur (Xanthium strumarium)

Common names:
Give a thumbs up Cocklebur
Give a thumbs up Rough cockleburr
Give a thumbs up Common Cocklebur

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Annual
Sun Requirements: Full Sun
Full Sun to Partial Shade
Partial or Dappled Shade
Water Preferences: Mesic
Dry Mesic
Dry
Plant Height: can grow to 3 feet
Plant Spread: 24 inches
Fruit: Other: bur with hook spines
Flowers: Inconspicuous
Flower Color: Green
Other: Green
Bloom Size: Under 1"
Flower Time: Late spring or early summer
Summer
Uses: Will Naturalize
Toxicity: Leaves are poisonous
Other: seedlings are the most toxic to animals
Propagation: Seeds: Self fertile
Pollinators: Various insects
Miscellaneous: Tolerates poor soil

Image

Honey Bees in the Garden:  JulyHoney Bees in the Garden: July
By Mindy03 on July 6, 2011

Independence Day and the beginning of the hottest days of summer, the Dog Days, are the major events in July. Gardeners and honey bees are trying to keep cool and harvesting food.

(Full article25 comments)
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Comments:
Posted by gardengus (Indiana Zone 5b) on Oct 13, 2012 7:57 AM

The cocklebur has an oval brown bur with hooked spines that produces two seeds in late season and is often confused with the bi-annual burdock (Arctium minus) which has a round bur and, in my opinion, softer spines.
The flower of the cockle is green and small / the flower of the burdock is purple and held on a tall stalk.
Cocklebur is toxic to pasture anamals
Cocklebur can be best controlled in the pasture by short mowing. It is an annual and reproduces only by seed.

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Discussion Threads about this plant
Thread Title Last Reply Replies
ID weeds/plants/native by skopjecollection Nov 17, 2020 11:16 AM 12
4000sq/ft of thistle by Timinohio Apr 4, 2017 6:56 PM 36
strange plant in Colorado by toquieroyacobell Nov 6, 2016 6:07 PM 2
(Xanthium strumarium). (Cephalanthus occidentalis), (Eryngium leavenworthii) by 90fbm Oct 5, 2015 9:54 PM 21
Cocklebur (Xanthium strumarium) by BeKind Sep 8, 2015 11:12 AM 5

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