Russell Cooper / Perforate St John's wort (Hypericum perforatum) in flower, London, UK, July.

Paul Harcourt Davies / Perforate St John's Wort (Hypericum perforatum) in flower, Podere Montecucco, Orvieto, Umbria, Italy, July.

Colin Varndell / Perforate St.John's wort flowers (Hypericum perforatum) Ballard Down, Dorset UK. July

Nigel Cattlin / St John's wort (Hypericum perforatum), Bladder campion (Silene vulgaris) hedge bedstraw (Galium mollugo) flowering in high summer on chalk downland, Berkshire, June

Bernard Castelein / Grayling butterfly (Coenonympha pamphilus) resting on St. John's wort (Hypericum perforatum) seedheads, Klein Schietveld, Brasschaat, Belgium. August.

Linda Pitkin / Wildflower meadow with flowering St John's-wort (Hypericum perforatum), and Oxeye daisies (Leucanthemum vulgare), Nutfield Marsh Nature Reserve, Surrey, England. July.

Linda Pitkin / St John's-wort (Hypericum perforatum) in flower, Surrey, England, July.

Rod Williams / Common or Perforate St John's wort (Hypericum perforatum) Hutchinson's Bank, New Addington, London, England, UK. JuneJuly