Index / Search / Lolium perenne ssp. multiflorum
§1 Plant — subspecies · Poaceae
Lolium perenne L. ssp. multiflorum (Lam.) Husnot
vernacular Italian ryegrass
§2Habit & range
Habit and range
- Growth habit
- Graminoid
- Duration
- Annual, Perennial
- Group
- Monocot
- Family
- Poaceae Barnhart
- Genus
- Lolium
§2a
Native status, by region
- AK Alaska Introduced
- CAN Canada Introduced
- GL Greenland Introduced
- HI Hawaii Introduced
- L48 Lower 48 States Introduced
- SPM St. Pierre & Miquelon Introduced
§3Cultivation specs · USDA
Recorded by the USDA Plant Materials Program.
§3a
Tolerances
- Drought
- Low
- Shade
- Medium
- Moisture use
- Medium
- Fire
- Low
- Salinity
- High
- Anaerobic
- Low
- CaCO₃
- Medium
- Hedging
- None
§3b
Climate & soil
- Cold tolerance
- -8 °F minimum
- Frost-free days
- 150 min.
- Precipitation
- 18–65 in/yr
- pH range
- 5–7.9
- Root depth
- 8 in min.
- Fertility need
- Medium
- Soil texture
- coarse, medium, fine
§3c
Form & growth
- Growth form
- Bunch
- Growth rate
- Rapid
- Lifespan
- Short
- Mature height
- 2.5 ft
- Foliage texture
- Fine
- Foliage colour
- Green
- Porosity (summer)
- Moderate
- Porosity (winter)
- Porous
- Flower colour
- Yellow
- Fruit colour
- Brown
- Fire resistant
- No
- N fixation
- None
- Toxicity
- None
§3d
Reproduction
- Bloom period
- Early Spring
- Seed abundance
- High
- Seed begins
- Spring
- Seed ends
- Spring
- Spread rate
- Moderate
- Stratify
- No
- Seeds / lb
- 217,000
- Propagation
- seed
§3e
Use & availability
- Commercial availability
- Routinely Available
- Nursery stock
- No
- Browse palatability
- Low
- Graze palatability
- Medium
- Palatable, human
- No
- Protein potential
- High
- Lumber
- No
- Christmas tree
- No
§4Montana distribution
Recorded in 13 of 56 Montana counties.
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/LOPEM2 ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/4129708 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-25
fetched 2026-05-25T16:28:53Z