Prickly sowthistle (Sonchus asper)

Prickly sowthistle (Sonchus asper)

Observation - Prickly sowthistle (Sonchus asper). Description: Growing in a bag of builder's sand; probably an accidental introduction to the site. Edit: title changed to agree with Tim's ID.

Growing in a bag of builder's sand; probably an accidental introduction to the site.
Edit: title changed to agree with Tim's ID.