
© Andrey Zharkikh · CC BY-NC
iNaturalist — CC, credited & licensed per image

Poaceae family
Letterman's Needlegrass Achnatherum lettermanii
Native
Deer favourite — Rated highly palatable to browsing deer — so where deer are around, expect this one to get nibbled. It's a documented preference, not a certainty: pressure swings with the place and season, and a fenced or low-deer yard may be untouched.
Letterman's Needlegrass is a perennial grass native to the lower 48 states. It grows to 2 ft and blooms Jul in part shade – shade, with brown fruit.
More about this plant
Eriocoma lettermanii is a species of grass known by the common name Letterman's needlegrass. It is native to the western United States from California and Oregon to Montana and New Mexico, where it is a resident of several types of habitat. Wikipedia →
Growing & care
USDA PLANTS · TRY Conditions
Sources · Conditions
USDA PLANTS — Sun · Soil & moisture
USDA — SoilPH — Soil pH
USDA PLANTS (DwCA, Zenodo 17903503) — Fertility Requirement / Soil Adaptation — Fertility need · Adapts to
USDA — Temp-Min °F — Hardiness
- Sun
- Part shade – shade
- Soil & moisture
- Low moisture
- Soil pH
- 6–7.6
- Fertility need
- Low
- Adapts to
- Coarse (sandy), Medium (loam)
- Hardiness
- USDA zone 5+
Size & form
Sources · Size & form
USDA PLANTS (DwCA, Zenodo 17903503) — Height, Mature — Height
USDA PLANTS (DwCA, Zenodo 17903503) — Growth Rate / Spread / Growth Form / Lifespan / Active Growth Period / Seed Period — Spread · Growth rate · Growth form · Active growth
USDA PLANTS — Lifespan
TRY Plant Trait Database (CC BY 4.0) · USDA PLANTS — Foliage
USDA PLANTS (DwCA, Zenodo 17903503) — Fruit/Seed Color / Fruit Persistence — Fruit
- Height
- 2 ft
- Spread
- None — clumping
- Growth rate
- Slow
- Growth form
- Bunch
- Lifespan
- Perennial · moderate
- Foliage
- Broadleaf · medium texture
- Active growth
- Spring through autumn
- Fruit
- Brown
In the garden
Sources · In the garden
USDA PLANTS (DwCA, Zenodo 17903503) — Propagation Method / Commercial Availability — Propagate by · In the trade
USDA PLANTS (DwCA, Zenodo 17903503) — Germination (cold stratification) — Seed starting
USDA PLANTS — Seed Period — Seeds ripen
USDA PLANTS (DwCA, Zenodo 17903503) — Foliage Texture / Browse Palatability / Resprout — Deer browsing · Resprouts if cut
- Propagate by
- Seed
- Seed starting
- No stratification needed
- Seeds ripen
- Summer – Autumn seed-collection / harvest window
- In the trade
- Contract growing only
- Deer browsing
- High browsed readily
- Resprouts if cut
- No
Herb layer — Sits in the herb of a layered food forest or polyculture.Open guide →
derived roles The garden year bloom → fruit → fall colour
J
F
M
A
M
J
J
A
S
O
N
D
Bloom
Bloom (the flower's colour)
Bloom · Jul — USDA PLANTS (DwCA, Zenodo 17903503) — BloomPeriod
When to sow · for your area
Sow timing keys off your local last- and first-frost dates.
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.
Sources for this entry (22) 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] Bloom period — USDA PLANTS (DwCA, Zenodo 17903503) — BloomPeriod
[06] Height — USDA PLANTS (DwCA, Zenodo 17903503) — Height, Mature
[07] Sun / shade — USDA PLANTS (DwCA, Zenodo 17903503) — ShadeTolerance
[08] Soil & moisture — USDA PLANTS (DwCA, Zenodo 17903503) — MoistureUse / SoilPH
[09] Cold hardiness (zone) — USDA PLANTS (DwCA, Zenodo 17903503) — Temperature, Minimum °F
[10] Toxicity — USDA PLANTS (DwCA, Zenodo 17903503) — HumanLivestockToxicity
[11] Growth & form — USDA PLANTS (DwCA, Zenodo 17903503) — Growth Rate / Spread / Growth Form / Lifespan / Active Growth Period / Seed Period
[12] Soil & fertility — USDA PLANTS (DwCA, Zenodo 17903503) — Fertility Requirement / Soil Adaptation
[13] Landscape traits — USDA PLANTS (DwCA, Zenodo 17903503) — Foliage Texture / Browse Palatability / Resprout
[14] Propagation & availability — USDA PLANTS (DwCA, Zenodo 17903503) — Propagation Method / Commercial Availability
[16] Seed germination — USDA PLANTS (DwCA, Zenodo 17903503) — Germination (cold stratification)
[17] Invasive / introduced status — USDA PLANTS (DwCA, Zenodo 17903503) — native status
[18] Photos — iNaturalist — CC, credited per image
[19] Description — Wikipedia (CC BY-SA)
[20] Ecological value — GloBI
[21] Conservation rank — NatureServe Explorer (CC BY)
[22] Foliage — TRY Plant Trait Database (CC BY 4.0)
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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