Editing Hypericum perforatum (section)

===Habitat===
The species can be found in a variety of habitats including open woods, [[meadow]]s, grasslands, [[steppe]], riverbanks, and stony or grassy hillsides and roadsides. It prefers dry habitats or areas with strong [[drainage]].<ref name="Robson-2002" />{{rp|88}} The species thrives in areas with at least {{convert|760|mm|abbr=on}} of rainfall per year; however, its distribution is restricted by temperatures too low for seed germination or seedling survival: an absolute minimum of −3{{Nbsp}}°C or an annual average of 9{{Nbsp}}°C.<ref name="cabi">{{cite web |author1=Ian Popay |date=22 June 2015 |title=''Hypericum perforatum'' (St John's wort) |url=https://www.cabi.org/isc/datasheet/28268 |access-date=2 December 2018 |publisher=CABI}}</ref> Altitudes greater than {{convert|1500|m|abbr=on}}, rainfall less than {{convert|500|mm|abbr=on}}, and daily mean temperatures greater than {{convert|24|C|F}} are also considered limiting thresholds.<ref name="BioactiveMolecules" />