Bloomipedia
Purple foxglove (Digitalis purpurea)
Photo: Kent P. McFarland via iNaturalist · CC0 · resized

Flower profile

Purple foxglove

Digitalis purpurea

Introduced in the lower 48

Purple foxglove is a wildflower that USDA PLANTS lists as introduced in the lower 48 states. It's on our flower lists for 2 states, and across the U.S. it's most often seen in bloom in May–August.

22states
2of our state lists
24,237U.S. sightings*

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

On our lists for: New Hampshire, Washington

Quick look

Digitalis purpurea, the foxglove or common foxglove, is a toxic species of flowering plant in the plantain family Plantaginaceae, native to and widespread throughout most of temperate Europe. It has also naturalized in parts of North America, as well as some other temperate regions. The plant is a popular garden subject, with many cultivars available. It is the original source of the heart medicine digoxin.

  • It belongs to the Plantaginaceae family. iNaturalist
  • USDA PLANTS describes it as an herb (forb) with a biennial life cycle. USDA PLANTS
  • USDA PLANTS lists it as introduced in the lower 48 states and records it in 22 states. USDA PLANTS
  • NatureServe lists it as not native to Washington and New Hampshire. NatureServe
  • In Washington, most iNaturalist sightings of it in flower come in May–August. iNaturalist
  • In New Hampshire, most iNaturalist sightings of it in flower come in June–August. iNaturalist
  • USDA PLANTS lists its flower color as purple. USDA PLANTS
  • USDA PLANTS gives its bloom period as summer. USDA PLANTS
  • USDA PLANTS lists a mature height of about 5 ft. USDA PLANTS
  • iNaturalist has 9,014 research-grade sightings of it in Washington, ranking #6 among the 110 flowers on our Washington list. iNaturalist
  • iNaturalist has 205 research-grade sightings of it in New Hampshire, ranking #101 among the 109 flowers on our New Hampshire list. iNaturalist

Purple foxglove gift ideas

Handmade purple foxglove gifts from independent makers.

When does it bloom?

Flowering records by month across the U.S. (iNaturalist research-grade observations marked “Flowering”) (2,474 records)
Bloom time in each of our 2 states
StateTypePeak bloomSightings*
WashingtonIntroducedMay–August9,014
New HampshireIntroducedJune–August205

Conservation status

Federal (U.S. ESA)
Not listed No U.S. Endangered Species Act listing in the USFWS ECOS database. USFWS ECOS
NatureServe global
GNR Not yet ranked worldwide. NatureServe
Washington
No list Washington has no state law listing endangered or threatened plants (the Washington Natural Heritage Program's rare plant list isn't regulatory), so we show NatureServe's Washington ranks instead. NatureServe: SNA, not applicable (usually because it isn't native there) in Washington.
New Hampshire
Not listed Not on New Hampshire Official Rare Plants List (Ncr 312, eff. Jan 1, 2020). NatureServe: SNA, not applicable (usually because it isn't native there) in New Hampshire. NH Ncr 312
Rare elsewhere
No other U.S. state ranks it S1, S2, SH or SX.

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

Can you eat it?

For peoplePoisonous to people

NC State Extension lists it as poisonous to humans (severity: high). Poisonous parts: flowers, leaves, roots, stems. Symptoms they list: “Nausea, vomiting, diarrhea, stomach pain, severe headache, irregular and slow pulse, tremors, unusual color visions, convulsions, Cardiac arrhythmias, death” NC State Extension

For petsToxic to dogs, cats and horses

ASPCA's entry “Foxglove” (Digitalis purpurea) lists it as toxic to dogs, cats and horses. ASPCA

🌿 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.

Where does it grow?

USDA PLANTS records purple foxglove in 22 states.

recorded by USDA PLANTS on our state lists not recorded

See the full list of states

Alaska, California, Colorado, Connecticut, Idaho, Maine, Maryland, Massachusetts, Michigan, Montana, New Hampshire, New Jersey, New York, Ohio, Oregon, Pennsylvania, Utah, Vermont, Washington, West Virginia, Wisconsin, Wyoming.

Washington counties with USDA records: Chelan, Clallam, Cowlitz, Grays Harbor, Island, Jefferson, King, Kitsap, Klickitat, Lewis, Pacific, Pierce, San Juan, Skagit, Snohomish, Thurston, Wahkiakum, Whatcom, Whitman.

More Washington flowers

Sources