Star of Persia

Allium cristophii Trautv.

light
Sun–part
water
—
tall
51 cm
wide
46 cm

Amaryllidaceae

Also called Persian Onion, Star-of-Persia, Persian onion

Formerly Caloscordum cristophii

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.

PetsWikipedia lists it as toxic to dogs and cats (25 Oct 2026)
PeopleNC State Extension lists it as mildly poisonous (flowers, fruits, leaves, roots, seeds, stems) (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
Bulbous geophyteKew's checklist, not yet checked
Climate
TemperateKew's checklist, not yet checked
Wild in
C. Türkiye (Kayseri), Turkmenistan (Kopet Da.) to NE. IranKew's checklist, not yet checked
Light
Full sun to part shade (3 h or more)Read from NC State Extension and Wikipedia, checked by a majority of its sourcesBacked by both sources
Height
51 cmRead from NC State Extension and Wikipedia, checked by a majority of its sourcesBacked by both sources. Sources differ: NC State Extension 6–24 in; Wikipedia 50–50 cm
Spread
30 cm to 61 cmRead from NC State Extension, one source
Flowers
Pink, purpleRead from NC State Extension and Wikipedia, not yet checked: its sources are splitTied: no reading has a majority of the 2 sources, so all are kept for a person to settle. Sources differ: NC State Extension purple; Wikipedia pink
Coldest it survives
-31.6 °C (USDA zone 4b)Read from NC State Extension and Wikipedia, checked: the middle of what its sources sayHalfway between its 2 sources, which differ. Sources differ: NC State Extension -34.4 °C; Wikipedia -28.9 °C

Not known yet: water, heat, hottest it survives.

In other languages (12)

German
Sternkugel-Lauch
Russian
Лук Христофа
Czech
česnek ozdobný
Estonian
turkmeenia lauk
Swedish
stäpplök
Polish
Czosnek białawy, Czosnek Krzysztofa
Chinese (China)
纸花韭
Finnish
tähtilaukka
French
Étoile de Perse, Ail à boule étoilée
Chinese
紙花韭, 纸花葱, 纸花韭
Slovak
cesnak kovovolesklý
Lithuanian
Standžiažiedis česnakas

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.