Canada Wildrye

Canada Wildrye

Elymus canadensis

Plant Type
Grass (Semi-evergreen)
Landscape Layer
Grasslayer
Sun
☀️ Full Sun, ⛅ Part Sun
Moisture
🏜️ Dry, 💧 Regular
Soil
Clay, Loam, Sand, Silt, Calcareous
Bloom
July, August, September
Sociability
S4 – Large patches

Pollinator Value

🐛 Larval Host
Resapamea stipata, Mythimna unipuncta

S13+S15 2 verified Eastern NA

❄️ Winter Food Source
Persistent seed heads provide winter forage for granivorous birds including Gray Partridge, Snow Bunting, Greater White-fronted Goose, Tundra Swan, and Chukar. Seeds remain on nodding spikes through fall and into winter, accessible above snow cover.

S57 5 bird species at genus level; S10 spikes turn tan and persist in fall

Ecology & Conservation

Proximity Score
0
Native Status
✅ Outaouais ✅ Ottawa ✅ QC ✅ ON
Closest Direction
Local
CEC Eco-Regions
5 – Northern Forests, 5.2 – Mixed Wood Shield, 5.2.3 – Algonquin/Southern Laurentians
Rarity Notes
Globally secure (G5) and nationally secure in both Canada and the US (N5). Not ranked at provincial level in Ontario or Quebec. Not listed under SARA or COSEWIC. Widespread across North America from British Columbia to New Brunswick.

S22 G5, N5; S26 SARA not listed; S1 native in 8 Canadian provinces/territories

Rarity Ranks
QC SNR – Not Ranked, ON SNR – Not Ranked
Migration
Stable
Ecological Context
Canada wildrye is a cool-season bunchgrass of open sandy shores, dunes, river banks, and prairie edges. In the Ottawa River valley it occurs on calcareous shoreline pavements and sand deposits along the Outaouais, growing with Schizachyrium scoparium and Sorghastrum nutans. It is an early-successional colonizer that establishes quickly from seed but gives way to later-successional species within a few years.

S46 cool-season, pioneer; S48 calcareous rive habitat; S7 sandy shores and dunes; S63 riviu00e8re des Outaouais

Permaculture & Companion Planting

Roles
Fortress/Barrier, Pollinator Attractor

S73/S29/S72 Evidence: Fortress/Barrier: S61 keyword match: prickl (supporting signal only)] | Pollinator Attractor: S73 [HIGH]: S64 Xerces listed (source-classified)]

Medicinal Properties

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Category
Ceremonial Medicine, Kidney Aid

S28 Iroquois Drug categories

Notes
Used by the Iroquois in compound decoctions: roots taken for kidney ailments and as treatment for stricture. Also used ceremonially as a seed-soak medicine for corn before planting.

S28 Iroquois Drug=Ceremonial Medicine, Kidney Aid, Other (stricture); Iroquois Other=Fertilizer

Edibility & Foraging

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✅ Edible   

Foraging Notes
Seeds were gathered and used as food by the Gosiute and Ute peoples. The Kiowa used foliage and lemmas as livestock fodder. Seeds can be cleaned, dried, toasted, or ground into meal for porridge or coarse flour. A supplementary wild cereal rather than a primary staple.

S28 Gosiute, Ute, Kiowa food uses; S29 seed cooked, ground into flour

Seed Source

  • Localeaf / OWSL
Canada Wildrye