Square Stemmed St. Johns Wort Superplugs (Hypericum tetrapterum)

Hypericum tetrapterum. P Yellow flowers from June-September , grows to about 60cm in height  Likes Damp Zone A




Its common names include St. Peter’s wort, Peterwort, square stemmed St. John’s wort, and square stalked St. John’s wort.  It is also common in damp habitats such as marshes, streamsides, open ditches, meadows, and springs. The stems are square in cross section, with conspicuous wings at the corners.

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