
© Guillaume Petit · CC BY
iNaturalist — CC, credited & licensed per image

Poaceae family
Field Fescue Festuca arvernensis
Field Fescue is an introduced perennial grass, found in the lower 48 states.
More about this plant
Festuca arvernensis is a species of perennial plant from family Poaceae. It is native to France. It can also be found in such US states as California and New Mexico. It was first described in 1977. Wikipedia →
Growing & care
USDA PLANTS · TRY Conditions
Sources · Conditions
Cold hardiness (derived) — Hardiness
- Hardiness
- ≥ zone 8 derived from its U.S. range
Size & form
Sources · Size & form
USDA PLANTS — Lifespan
TRY Plant Trait Database (CC BY 4.0) — Foliage
- Lifespan
- Perennial
- Foliage
- Broadleaf
In the garden
Herb layer — Sits in the herb of a layered food forest or polyculture.Open guide →
derived roles
Species characteristics from USDA PLANTS (public domain) + TRY (CC BY) — general guidance, not a
guarantee for your exact site. Deer "browsing" is documented palatability, not a deer-proof claim.
Wildlife & pollinators
How pollinator value is scored →❧ Caterpillar hosts ~4 caterpillar species
Festuca supports ~4 caterpillar species.
Native butterfly & moth caterpillars are the base of the terrestrial food web — most songbirds rear their young almost entirely on them. As a host for native Lepidoptera this is a modest genus.
Recorded feeding on Festuca in North America, including:
+ 8 more species → ↑ show fewer
Keystone count (genus-level) from Warren II 2026 (CC0) · Tallamy host-use records. Named species (a documented Nearctic sample, not exhaustive) from NHM HOSTS (CC0).
Species thumbnails re-hosted from iNaturalist — Creative Commons, credited per image (hover for credit). Click any species to see it on iNaturalist. Not exhaustive; many taxa have no openly-licensed photo yet.
Sources for this entry (13) Open & cited
[01] Scientific name & family — USDA PLANTS (DwCA, Zenodo 17903503)
[02] Growth habit & duration — USDA PLANTS (DwCA, Zenodo 17903503)
[03] Native status & distribution — USDA PLANTS (DwCA, Zenodo 17903503)
[04] Common name — USDA PLANTS (via GBIF)
[05] Invasive / introduced status — US-RIIS v2.0 (USGS)
[06] Photos — iNaturalist — CC, credited per image
[07] Description — Wikipedia (CC BY-SA)
[08] Ecological value — Warren II 2026 (CC0) · Tallamy host-use counts
[09] Foliage — TRY Plant Trait Database (CC BY 4.0)
[10] Cold hardiness (derived) — Derived from U.S. range × USDA PHZM zones
[11] Chromosomes — ChromoDB — IAPT/IOPB chromosome data series (Zenodo, CC BY 4.0)
[12] Caterpillar host count — Warren II 2026 (Dryad, CC0) · Tallamy host-use counts
[13] Caterpillar species — NHM HOSTS (CC0)
Spot an error or have a better photo? Every field links to its source, and the whole dataset is open.
Cite this page Open data, please attribute
PlantKey’s data is open under CC BY-SA 4.0 — free to reuse and adapt, with attribution and the same licence. Photos keep their own per-image licence + credit (see Sources above).
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