St. Paul has created some street art for their signage. This site is a simpler version, with other variations that can be found elsewhere in St. Paul, such as in the Highland Park neighborhood. So far, all of the examples I have seen seem to be variations on the theme of growing plants. As you search for this cache, can you see how they trying to represent a growing plant? Course the flower is a little unusual. Needless to say, when these popped up in our neighborhood, we were somewhat perplexed at first.
This can be a high muggle zone, especially on school days, evenings, and other times that families will walk their dogs. Plan your search accordingly.