Speaker Series - Thesium ramosum, a new weed of concernSpeaker Series - Thesium ramosum, a new weed of concernThu, Sep 11, 6:30 PMFish Creek Environmental Learning Center and Online • Calgary, ABFriends of Fish Creek496 followersSave Speaker Series - Thesium ramosum, a new weed of concern to your collection.Share Speaker Series - Thesium ramosum, a new weed of concern with your friends.