Western water hemlock (Cicuta douglasii) is a perennial native to the northwest portion of North America. It is the most poisonous plant on the continent. The toxin cicutoxin found in western ...

Said Zellerbach: “Three decades ago, the western hemlock was considered little more ... Timber Co. processes out of Douglas fir bark, flows like cement, then hardens, can be nailed like wood.

Western red cedar and western hemlock are not drought-tolerant, Kohler said. And research suggests much of the red cedar mortality is drought-driven. Meanwhile, bark beetles often take advantage ...

Due to their similar names, the deadlier western water hemlock is sometimes confused with poison hemlock. Convulsions are a common sign of western water hemlock poisoning, although convulsions ...