An interesting thing happened just after the Farm Tour, while hand walking Dallas along the bike path. This walk is always a special treat for Dallas - she enjoys watching the cows, munching on grass and alfalfa flowers, and enjoying an occasional apple along the way.
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Although Dallas seemed fine after the walk, I was a bit concerned about her trailside snack. Might it be poisonous? I walked back to that location and picked a sample of the mystery weed to see if someone could identify it for me. I brought it over to Mary Gallagher, who was holding Danny at the time, and he reached for a bite of it. It appeared that horses like to eat this strange thing. Mary suggested I give the sample to Jess, who might be able to identify it, and indeed she was: it was sow thistle or Sonchus oleraceus, for those who prefer the scientific name.
Of course, I had to do some internet research. One site I found, Survival Plants Memory Course had some interesting details. A few tidbits from their description:
"In legend, sow thistle was supposed to have been given to the Greek Hero Theseus before he defeated the bull of Marathon. In Italian stories, the phrase "Open Sow-Thistle" was used for the same purpose as the words 'Open Sesame'."
Of most interest to me was the fact that it is very edible and has medicinal uses, primarily antidiarrheal:
"COMMON CONDITIONS: Diarrhea - Infusion of whole plant to cleanse or purge; purpose of removing offending materials, as indigestible food, discharges, bacteria, etc."
Supposedly, the authors claimed, horses don't like to eat it, but what do they know; apparently, Dallas had a problem and knew what she needed to fix it: her stool firmed up within a day or two and has stayed healthy and solid. And that's the rest of the story!