Fact sheet: St. John’s Wort by kathywarner Posted: May 28, 2017 St John’s Wort, also known as Tipton’s Weed or Klamath Weed is a perennial herb indigenous to Europe which has been introduced to many temperate areas of the world and grows wild in many… Read More Category: Florida-Friendly Landscaping, Home Landscapes Tags: demonstration garden, herb, Hypericum perforatum, St John's Wort