Tennessee › Asteraceae

Largeflower Tickseed

Coreopsis grandiflora

Also known as

Large Flower Tickseed

Strong

Tennessee · provisional Quercus Score

Calculated with the same rules as North Carolina, using Tennessee host-range and conservation-rank inputs. Native-status evidence is shown separately.

Tennessee scoring method and limits

Insect resources, birds and habitat

Caterpillars	7 recorded species on the genus Host genera of native Lepidoptera recorded in Tennessee; host association and range overlap, not confirmed local feeding.
Bees	46 recorded species on the genus Southeastern North America
Specialist bees	15 recorded species on the genus Eastern North America
Birds	0 recorded species on the genus North America
Structure	Forb/herb

Baseline 67; additional insect credit +0. Rarity adjustment -5 using the NC rule (unranked: −5; final score floor: 5). Missing records do not establish zero ecological use.

Native to Tennessee (state-specific source). Tennessee yard-fit calculations are not available yet.

Also available: North Carolina assessment. Both assessments use the same scoring rules with the evidence shown for each state.

Recorded in your county?

Tennessee county

Choose a county to check the available records.

County occurrence is not proof of native range or yard suitability. A missing record does not establish absence.

Tennessee status	Native to Tennessee (state-specific source)
Source conservation rank	No data
Recorded in Tennessee	7 counties in the atlas snapshot

Growing conditions

Full to part sun; medium to dry moisture level; tolerant of a wide range of soils including sandy, gravelly and clay; slightly acid to neutral to slightly alkaline pH. 1½ -2 feet height by 1½-2 feet spread; blooms in spring and potentially through summer into fall; yellow flowers; self-sows readily.

Native Region: Occurs in only 3 counties – Marion, Bradley and Meigs. UT Smart Yards source

Native-status evidence

Combined TN–KY atlas flag: not supplied. A regional flag alone does not settle Tennessee native status.

Combined-source assessment

Native to Tennessee (state-specific source)

A TN-specific UT native-guide page or an exact entry in the Tennessee rare-plant list supports a direct source claim. Otherwise, TN occurrence plus an atlas native flag and exact-name native evidence from NC flora or USDA L48 supports a provisional state inference. No one regional claim or occurrence alone establishes TN nativity; NC and L48 claims retain their actual scopes.

UT Tennessee Smart Yards native-plant guide: native (TN). Native Region: Occurs in only 3 counties – Marion, Bradley and Meigs.

NC vascular flora: native (NC).

USDA PLANTS: native (L48). CAN:I L48:N

TN–KY Plant Atlas: unknown (TN–KY).

Sources

Machine-readable: plant evidence.

Quercus Score v0.6.4 · built 2026-09-26 · Tennessee beta · sources and limitations on every page