Perforate St John's Wort Taken at Longhaugh Point on 23rd September 2020 using Panasonic Lumix LX5 in macro mode   Taken at Baron's Haugh on 18th July 2020 using Panasonic Lumix LX5 in macro mode Taken at Boat Of Garten on 24th July 2018 using Panasonic Lumix LX5 in macro mode. Taken at Loch Katrine on 9th July 2015 using Panasonic Lumix LX5 in macro mode. Perforate St John's Wort. Species: Order; Family: Habit: AKA: Hypericum perforatum. Malpighiales Hypericaceae. Perennial Herb. Tipton's weed, rosin rose, goatweed, chase-devil, or Klamath weed. Habitat: Blooms: Size: Feature: Open woods, along hedgerows and roadside verges and on waste ground. June - September. Flowers measure up to 2.5 cm across. The blood-red juice that exudes from its stems has made it a focus for much myth and ritual. The herb's common name comes from its traditional flowering and harvesting on St John's day, 24th June. The genus name Hypericum is derived from the Greek words hyper (above) and eikon (picture), in reference to the plant's traditional use in warding off evil by hanging plants over a religious icon in the house during St John's day. The species name perforatum refers to the presence of small oil glands in the leaves that look like windows, which can be seen when they are held against the light.