Flower profile
Tuberous grass pink
Calopogon tuberosus
Tuberous grass pink is a wildflower that USDA PLANTS lists as native in the lower 48 states. In New Hampshire it's most often seen in bloom in June–July.
*iNaturalist research-grade observations, as of October 17, 2026.
On our lists for: New Hampshire
Quick look
Calopogon tuberosus, the tuberous grass pink, is an orchid native to eastern North America. It is a perennial forb.
- It belongs to the Orchidaceae family. iNaturalist
- USDA PLANTS describes it as an herb (forb) with a perennial life cycle. USDA PLANTS
- USDA PLANTS lists it as native in the lower 48 states and records it in 33 states. USDA PLANTS
- NatureServe lists it as native to New Hampshire. NatureServe
- In New Hampshire, most iNaturalist sightings of it in flower come in June–July. iNaturalist
- iNaturalist has 291 research-grade sightings of it in New Hampshire, ranking #93 among the 109 flowers on our New Hampshire list. iNaturalist
Tuberous grass pink gift ideas
Handmade tuberous grass pink gifts from independent makers.
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Tuberous grass pink art print
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Tuberous grass pink embroidery pattern
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Tuberous grass pink sticker
When does it bloom?
In New Hampshire, most flowering sightings come in June–July.
Conservation status
- Federal (U.S. ESA)
- Not listed No U.S. Endangered Species Act listing in the USFWS ECOS database. USFWS ECOS
- NatureServe global
- G5 Secure worldwide. NatureServe
- New Hampshire
- Not listed Not on New Hampshire Official Rare Plants List (Ncr 312, eff. Jan 1, 2020). NatureServe: SNR, not yet ranked in New Hampshire. NH Ncr 312
- Rare elsewhere
- Other states where NatureServe ranks it rare or missing: AR (S1), DC (SX), DE (S1), IA (SX), IL (S2), MD (S1), MO (S2), OH (S2), OK (S1), RI (S2), VA (S1). (S1 critically imperiled, S2 imperiled, SH possibly extirpated, SX presumed extirpated.)
Checked October 17, 2026. Rankings and lists can change, so follow the links for the latest.
Can you eat it?
None of the sources we checked (NC State Extension (no page for this plant), USDA PLANTS) say whether it's edible or poisonous for people.
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.
Where does it grow?
USDA PLANTS records tuberous grass pink in 33 states plus Washington, D.C.
recorded by USDA PLANTS on our state lists not recorded
See the full list of states
Alabama, Arkansas, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Vermont, Virginia, West Virginia, Wisconsin; District of Columbia.
New Hampshire counties with USDA records: Carroll, Cheshire, Coos, Hillsborough, Merrimack, Rockingham, Strafford.
More New Hampshire flowers
Sources
- USDA, NRCS. PLANTS Database, profile CATU5.
- iNaturalist, Calopogon tuberosus: taxonomy, research-grade observation counts and “Flowering” annotations, retrieved October 17, 2026.
- Wikipedia, Calopogon tuberosus (lead quoted under CC BY-SA 4.0).
- New Hampshire: New Hampshire Official Rare Plants List (Ncr 312, eff. Jan 1, 2020).
- New Hampshire: NH Prohibited Invasive Species List (Agr 3800, Table 3800.1).
- USFWS, ECOS species database (ESA listing check), October 17, 2026.
- NatureServe Explorer, Calopogon tuberosus (global and state ranks).
- Edibility and toxicity: no source found (marked "not well documented").
- Photo: er-birds via iNaturalist · CC BY 4.0 · resized.