Klamath Weed

Even if you lived in downtown Portland and never went to a park, chance are you would find the Klamath Weed (Hypericum perforatum). Also called St. John's Wort, this noxious weed has attractive flowers and grows just about anywhere, including along sidewalks in town! The plant's name refers to the tiny purple dots along the edges of the flower petals. The weed is mildly toxic, so don't be making salads with this one!

You've also probably seen the hybridized version of St. John's Wort, which you can buy at the garden store. It's very hardy and can be seen in landscaped areas along roads in our area. See photo 3 below. The flower is about 10 times bigger than the original.

These are growing along Laurelview road near our home. 6/20/2013.