Common soapwort

Saponaria officinalis L.

light
Full sun
water
Little
tall
53 cm
wide
38 cm

Caryophyllaceae

Also called Bouncing-bet, Bouncing bet, Soapwort, Bladder Soapwort, China Cockle

Formerly Bootia saponaria, Bootia vulgaris, Lychnis officinalis, Lychnis saponaria, and 4 more

When it flowers

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

Read from iNaturalist photographs of it in flower. A month counts at 50% of the best month's flowering share (smoothed over three months) and 10% of its flowering count, from at least 100 flowering observations in the band.

PetsNo pet-safety information yet
PeopleNC State Extension lists it as mildly poisonous (roots, seeds) (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
Perennial or rhizomatous geophyteKew's checklist, not yet checked
Climate
TemperateKew's checklist, not yet checked
Wild in
Europe to CaucasusKew's checklist, not yet checked
Light
Full sun (6 h or more)Read from NC State Extension, one source
Height
30 cm to 76 cmRead from NC State Extension, one source
Spread
30 cm to 46 cmRead from NC State Extension, one source
Water
Little: takes droughtRead from NC State Extension, one source
Flowers
White, pinkRead from NC State Extension, one source
Coldest it survives
-45.6 °C (USDA zone 2a)Read from NC State Extension, one source

Not known yet: heat, hottest it survives.

In other languages (12)

Dutch
Zeepkruid, gewoon zeepkruid, zeepkruid
Spanish
Saponaria, herbada, Jabonera
German
Gewöhnliches Seifenkraut, Echtes Seifenkraut, Gebräuchliches Seifenkraut
root
SAPOFF, Sebonllys
Portuguese
Erva-saboeira, Erva-sabão
Russian
Мыльнянка лекарственная, Мыльник
French
Saponaire officinale, saponaire officinale
Italian
Saponaria
Czech
mydlice lékařská
Swedish
såpnejlika, Såpnejlika
Japanese
サボンソウ
Lithuanian
Vaistinis putoklis, Putoklis

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.