Poa annua L., 1753 33% complete

Annual bluegrass

Sp. Pl.: 68 (1753)

Data sources

Each value Trefle shows for Poa annua, with what every source says about it. When sources disagree, the strongest source is shown (how sources are ranked). Values imported before sources were recorded one by one are marked Source not recorded.

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Sourced11 Differs from sources2 Source not recorded8 Not on the record11 Sources: TRY Plant Trait Database
Field Shown What the sources say
Core
Author L. No source recorded
Source not recorded
Bibliography Sp. Pl.: 68 (1753) No source recorded
Source not recorded
Phylum Tracheophyta No source recorded
Source not recorded
Rank species No source recorded
Source not recorded
Status accepted No source recorded
Source not recorded
Year 1753 No source recorded
Source not recorded
Descriptive
Common name Annual bluegrass No source recorded
Source not recorded
Observations Temp. Old World to Trop. Mts. No source recorded
Source not recorded
Morphology
Average height 10 cm
  • 10.35 cm · TRY Plant Trait Database · Measured · 57 observations · 2026-10-09
    TRY 7.0 datasets 25, 28, 45, 86, 88, 92, 108, 116, 164, 174, 175, 178, 270, 449, 468, 474, 500, 519, 526, 577, 853, 882, 897
Differs from sources
Biological type therophyte
  • therophyte · TRY Plant Trait Database · Measured · 16 observations · 2026-10-09
    TRY 7.0 datasets 4, 25, 71, 164, 174, 175, 178, 500, 882, 918
Sourced
Foliage color green Sourced
Foliage texture fine Sourced
Fruit color empty Not on the record
Fruit shape caryopsis Sourced
Growth rate empty Not on the record
Maximum height 23 cm
  • 22.5 cm · TRY Plant Trait Database · Measured · 6 observations · 2026-10-09
    TRY 7.0 datasets 25, 28, 45, 86, 88, 92, 108, 116, 164, 174, 175, 178, 270, 449, 468, 474, 500, 519, 526, 577, 853, 882, 897
Differs from sources
Sexuality gynomonoecious Sourced
Phenology
Bloom months jan, jul Sourced
Duration annual, biennial, perennial
  • annual, biennial, perennial · TRY Plant Trait Database · Measured · 45 observations · 2026-10-09
    TRY 7.0 datasets 4, 25, 28, 65, 71, 86, 92, 110, 164, 175, 178, 203, 443, 460, 818, 879, 882, 918
Sourced
Ecology
Ground humidity 6 / 12 · moist (meso-hygrophilous)
  • 6 / 12 · moist (meso-hygrophilous) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09
    TRY 7.0 datasets 178, 203
Sourced
Light empty
  • 7 / 9 · half-light to light · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09
    TRY 7.0 datasets 178
Not on the record
Nitrogen fixation None
  • None · TRY Plant Trait Database · Measured · 13 observations · 2026-10-09
    TRY 7.0 datasets 37, 57, 67, 71, 89, 110, 444, 445, 882
Sourced
Soil nutriments 8 / 9 · very rich (pereutrophic)
  • 8 / 9 · very rich (pereutrophic) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09
    TRY 7.0 datasets 178, 242
Sourced
Soil salinity empty
  • 1 / 9 · barely saline (hyperoligohaline) · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09
    TRY 7.0 datasets 178
Not on the record
Cultivation
Minimum root depth 8 cm Sourced
Usda legacy
C n ratio empty Not on the record
Other
Halophyte status — Not on the record
Propagation method — Not on the record
Salt tolerance — Not on the record
Shade tolerance — Not on the record
Soil ph indicator — Not on the record
Temperature indicator — Not on the record