Q.Is It Poisonous?? It Was Not Bitter As Kale Is Or Blah As Spinach.
I cherish my Snow on the Mountain, this year it came up in my garden, thinking it might be from a Kale strayed seed, I plucked a leaf and ate it, 2 days later I ate another one. Thought the texture and taste would be good for salad. It was not bitter as Kale is or blah as spinach. I have 3 kinds of Kale in the back by the fence, now all is self seeding, so it was a possibility. Snow on the Mountain takes over when most of Calendulas are pulled out, reseeds itself also. Seeds from my Mother in Law.

Certified GKH Gardening Expert
Yes, it has low severity toxicity that can cause vomiting and diarrhea. There are several plants called snow-on-the-mountain. The toxic one is Euphorbia marginata.
Another one called bishop's weed (Aegopodium podagraria) is not poisonous.