St John's wort

ഹൈപെരികം പെർഫൊറാറ്റം

Hypericum perforatum L.

light
Sun–part
water
Medium
tall
61 cm
wide
42 cm

Hypericaceae

When it flowers

Not known yet in the tropics: too few flowering observations to read a season from.

PetsNC State Extension lists it as toxic to dogs, cats and horses (28 Oct 2026)
PeopleNC State Extension lists it as poisonous (leaves, sap) (25 Oct 2026)

If a child, a pet or anyone may have eaten a plant, contact a doctor or vet straight away, or call the National Poisons Information Centre (AIIMS, New Delhi) on 1800 116 117, free and open 24 hours.

Something wrong with it?

About it

Grows as
PerennialKew's checklist, not yet checked
Climate
TemperateKew's checklist, not yet checked
Wild in
Europe to China, NW. AfricaKew's checklist, not yet checked
Light
Full sun to part shade (3 h or more)Read from NC State Extension, one source
Height
30 cm to 91 cmRead from NC State Extension, one source
Spread
23 cm to 61 cmRead from NC State Extension, one source
Water
Average: moist, well drainedRead from NC State Extension, one source
Flowers
YellowRead from NC State Extension, one source
Coldest it survives
-40 °C (USDA zone 3a)Read from NC State Extension, one source

Not known yet: heat, hottest it survives.

In other languages (12)

Spanish
perico, periquito, corazoncillo
Simplified Chinese
夜关门
Catalan
Pericó, Corassonillo, Diablot
Walloon
Meytrô
German
Elfenblut
Persian
گل راعی, چای کوهی, علف چای
Irish
Beathnua
Armenian
Սրոհունդ
Italian
Iperico
Turkish
Binbirdelik otu
Arabic
St John's Wort, عرن مثقوب, نبتة سانت جونز
Azerbaijani
Adi dazı

Where this comes from

A fact “checked by a majority of its sources” was settled by a vote of the pages it was read from, not by a person reading it; one marked “one source” rests on that page alone. Anything else not marked checked has not been checked yet. Where nothing is known, the page says so rather than guess.