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From: Kempner, TX
Region: Southwest
Topic: Edible Plants
Title: Is horseherb (Calyptocarpus vialis) edible?
Answered by: Nan Hampton
However, we also haven't found it listed on any of our favorite toxic plant databases:
Poisonous Plants of North Carolina
Cornell University Poisonous Plants Informational Database
Canadian Poisonous Plants Information System
The City of Austin's Native and Adapted Landscape Plants says that is "somewhat deer resistant", which might indicate that it isn't very tasty—at least not to deer. You probably wouldn't get violently ill if you tried some (if it were deadly poisonous, I feel sure it would appear in at least one of those toxic databases), but you could possibly have some unpleasant reaction to it.
My advice is: Don't try it. Since it is so very common, if it were really delicious, someone would have talked about it by now.
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