Red Trillium (Trillium erectum): Quercus Score 27 in North Carolina

27

Good

Quercus Score for North Carolina · 5 of 5 factor datasets used; missing records do not prove absence (genus-level)

Native. The Trillium genus feeds 3 caterpillar species in NC, draws 1 bee species in the Southeast; no bird feeding interactions are recorded for this genus in the North American dataset. Few records for birds. Includes +1 provisional points for additional documented insect groups.

Insect resources, birds and habitat

Bars show recorded counts on a linear scale. Each category runs from zero to its largest count in this NC plant catalog; the same scale applies across plant pages. Compare plants within a category, not bar lengths across categories. Zero records may mean missing research. Growth form is shown as text.

Caterpillars

3 spp. on genus (NC)
Scale: 0–496

Bees

1 spp. on genus (Southeast)
Scale: 0–176

Specialists

0 specialist bee spp. (East)
Scale: 0–45

Birds

0 recorded bird spp. (N. America)
Scale: 0–58

Structure

Forb/herb

Soil

not yet scored

Additional insect evidence

Bar length follows recorded-name count on the displayed scale, not ecological importance. Unknown is not zero support. Flower visits do not confirm feeding or pollination. Named insects may include historical or unresolved names.

Ants

3 recorded names; seed dispersal (USA/Canada)
Scale: 0–20

Beetles

unknown: no matched records
Scale: 0–12

Flies

unknown: no matched records
Scale: 0–74

Adult butterflies / moths

unknown: no matched records
Scale: 0–15

Other wasps

unknown: no matched records
Scale: 0–75

Other insects

unknown: no matched records
Scale: 0–5

Provisional additional insect credit: +1 (maximum 5). Scoring rule and limitations. Study references and interaction records are included in this plant’s data record.

Fit for your county

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Overwintering: no reviewed hardiness guidance loaded. Heat tolerance is not assessed.

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How Fit works · Agent packet

NC status (state rank)	S5
Grows in	usually drier ground (wetland occurrence proxy: FACU; not a measured watering requirement)
Soil pH range	no data
Light	no data
Recorded in NC	Mountains; recorded in 20 counties (USDA)
Single-host caterpillars on genus	1
How the number was set	Base score 27, no adjustment (common in NC). Scoring uses relative ranks; display bars show counts. Caterpillar, bee and bird data are by genus.

Sources

Machine-readable: trillium-erectum.json. Cite as: Quercus Score v0.6.4, Trillium erectum, North Carolina, 2026-09-24.