Trailing St John's-wort
EN

Trailing St John's-wort

Hypericum humifusum

Unknown

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Hypericum_humifusum

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Trailing St John's-wort faces severe decline due to habitat loss from agricultural intensification and urban development across its native European range. The species is particularly vulnerable to drainage of wet heathlands and acidic grasslands, which destroys the specific soil conditions it requires. Recreational trampling and overgrazing by livestock further degrade remaining populations in protected areas.

Threat summary

Habitat

This low-growing perennial herb inhabits wet heathlands, acidic grasslands, and sandy or peaty soils with seasonal waterlogging. It typically occurs in nutrient-poor, acidic conditions along pond margins, dune slacks, and moorland edges.

TERRESTRIAL· majorTERRESTRIAL· major

Other threatened species in Hypericaceae

Slender St John's-wortVU

Slender St John's-wort

Hypericum pulchrum

Unknown
Pale St John's-wortCR

Pale St John's-wort

Hypericum montanum

Unknown

Frequently asked questions

Why is Trailing St John's-wort classified as Endangered?
Trailing St John's-wort is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. Trailing St John's-wort faces severe decline due to habitat loss from agricultural intensification and urban development across its native European range. The species is particularly vulnerable to drainage of wet heathlands and acidic grasslands, which destroys the specific soil conditions it requires. Recreational trampling and overgrazing by livestock further degrade remaining populations in protected areas.
Where does Trailing St John's-wort live?
Trailing St John's-wort occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Trailing St John's-wort?
The main threats to Trailing St John's-wort are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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