Summary ²

Very common weed throughout UCLA campus in both cultivated areas and also weedy lots and in restoration areas. Produces milky white sap. Take photos of the base of leaves to separate from closely related Sonchus asper.

Sonchus oleraceus, with many common names including common sowthistle, sow thistle, smooth sow thistle, annual sow thistle, hare's colwort, hare's thistle, milky tassel, milk thistle, soft thistle, or swinies, is a plant in the dandelion tribe within the daisy family.

Sources and Credits

1. (c) Phil Sellens, some rights reserved (CC BY), http://www.flickr.com/photos/33303746@N07/3535847370
2. Adapted by Andy Kleinhesselink from a work by (c) Wikipedia, some rights reserved (CC BY-SA), https://en.wikipedia.org/wiki/Sonchus_oleraceus

More Info

• iNat taxon page
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