Flower profile

Celandine poppy

Chelidonium diphyllum

Celandine poppy (Chelidonium diphyllum) is a flowering plant in the Papaveraceae family, blooming mostly April–May across the U.S.

Celandine poppy is a flowering plant. It's on our flower lists for 4 states, and across the U.S. it's most often seen in bloom in April–May.

–states where USDA records it

4Bloomipedia state lists include it

15,209U.S. sightings*

*iNaturalist research-grade observations, as of October 17, 2026.

On our lists for: Delaware, Indiana, Kentucky, Ohio

Quick look

It belongs to the Papaveraceae family. ^iNaturalist
In Indiana, most iNaturalist sightings of it in flower come in April–May. ^iNaturalist
In Ohio, most iNaturalist sightings of it in flower come in April–May. ^iNaturalist
iNaturalist has 1,858 research-grade sightings of it in Indiana, ranking #32 among the 173 flowers on our Indiana list. ^iNaturalist
iNaturalist has 1,776 research-grade sightings of it in Ohio, ranking #102 among the 186 flowers on our Ohio list. ^iNaturalist
iNaturalist has 1,389 research-grade sightings of it in Kentucky, ranking #28 among the 178 flowers on our Kentucky list. ^iNaturalist

When does it bloom?

Flowering records by month across the U.S. (iNaturalist research-grade observations marked “Flowering”) (2,664 records)

Bloom time in the 4 states whose Bloomipedia list includes it

State	Type	Peak bloom	Sightings*
Indiana	–	April–May	1,858
Ohio	–	April–May	1,776
Kentucky	–	March–April	1,389
Delaware	–	few records (31)	186

Conservation status

Federal (U.S. ESA): Not listed No U.S. Endangered Species Act listing in the USFWS ECOS database. ^{USFWS ECOS}
NatureServe: Unknown We couldn't find this name in NatureServe Explorer. ^NatureServe
Indiana: No list Indiana has no state law listing endangered or threatened plants (the DNR keeps a rare plant list, but it isn't regulatory), so we show NatureServe's Indiana ranks instead.
Ohio: Not listed Not on Ohio endangered and threatened plants (Ohio Adm. Code 1501:18-1-03, eff. Dec. 26, 2024). ^{OAC 1501:18-1-03}
Kentucky: Not listed Not on Kentucky endangered and threatened plant lists (400 KAR 3:040, eff. 2026). ^{400 KAR 3:040}
Delaware: Not listed Not on Rare and Uncommon Plants of Delaware (DNREC, 2024; informational, Delaware has no state plant-protection list). ^{DE rare plants 2024}

Checked October 17, 2026. Rankings and lists can change, so follow the links for the latest.

Can you eat it?

For peopleNot well documented

None of the sources we checked (NC State Extension (no page for this plant)) say whether it's edible or poisonous for people.

For petsNot well documented

It isn't on the ASPCA plant list.

🌿 Never eat a wild plant unless you're certain of its ID; this isn't medical advice. Worried about a person? Call Poison Control at 1-800-222-1222. Worried about a pet? Call your vet.