Erigeron canadensis L., 1753 54% complete

Horseweed

Sp. Pl.: 863 (1753)

Data sources

Each value Trefle shows for Erigeron canadensis, 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 sources4 Source not recorded16 Not on the record9 Sources: TRY Plant Trait Database
Field Shown What the sources say
Core
Author L. No source recorded
Source not recorded
Bibliography Sp. Pl.: 863 (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 Horseweed No source recorded
Source not recorded
Family common name Aster family No source recorded
Source not recorded
Observations New World No source recorded
Source not recorded
Morphology
Average height 42 cm
  • 42 cm · TRY Plant Trait Database · Measured · 95 observations · 2026-10-09
    TRY 7.0 datasets 7, 25, 28, 45, 50, 66, 92, 116, 164, 174, 178, 203, 251, 273, 309, 335, 349, 419, 429, 500, 559, 574, 818, 853, 882, 897, 918, 926
2 earlier or rejected values
  • Superseded 42 cm · TRY Plant Trait Database · Measured · 95 observations · 2026-10-09
    TRY 7.0 datasets 7, 25, 28, 45, 50, 66, 92, 116, 164, 174, 178, 203, 251, 273, 309, 335, 349, 419, 429, 500, 559, 574, 818, 853, 882, 897, 918, 926
  • Superseded 42 cm · TRY Plant Trait Database · Measured · 95 observations · 2026-09-17
    TRY 7.0 datasets 7, 25, 28, 45, 50, 66, 92, 116, 164, 174, 178, 203, 251, 273, 309, 335, 349, 419, 429, 500, 559, 574, 818, 853, 882, 897, 918, 926
Sourced
Biological type therophyte
  • therophyte · TRY Plant Trait Database · Measured · 30 observations · 2026-10-09
    TRY 7.0 datasets 4, 25, 71, 164, 174, 175, 178, 203, 349, 500, 559, 918
2 earlier or rejected values
  • Superseded therophyte · TRY Plant Trait Database · Measured · 30 observations · 2026-10-09
    TRY 7.0 datasets 4, 25, 71, 164, 174, 175, 178, 203, 349, 500, 559, 918
  • Superseded therophyte · TRY Plant Trait Database · Measured · 30 observations · 2026-09-17
    TRY 7.0 datasets 4, 25, 71, 164, 174, 175, 178, 203, 349, 500, 559, 918
Sourced
Flower color white, yellow
2 earlier or rejected values
  • Superseded brown, red, white · TRY Plant Trait Database · Measured · 5 observations · 2026-10-09
    TRY 7.0 datasets 4, 92, 882
  • Superseded brown, red, white · TRY Plant Trait Database · Measured · 5 observations · 2026-09-17
    TRY 7.0 datasets 4, 92, 882
Differs from sources
Flower conspicuous true No source recorded
Source not recorded
Foliage color empty
2 earlier or rejected values
Not on the record
Foliage texture coarse
2 earlier or rejected values
Differs from sources
Fruit color brown
2 earlier or rejected values
Sourced
Fruit shape achene
2 earlier or rejected values
Sourced
Growth form Single Crown No source recorded
Source not recorded
Growth habit Forb/herb No source recorded
Source not recorded
Growth rate Rapid
2 earlier or rejected values
Sourced
Maximum height 100 cm
  • 100 cm · TRY Plant Trait Database · Measured · 8 observations · 2026-10-09
    TRY 7.0 datasets 7, 25, 28, 45, 50, 66, 92, 116, 164, 174, 178, 203, 251, 273, 309, 335, 349, 419, 429, 500, 559, 574, 818, 853, 882, 897, 918, 926
2 earlier or rejected values
  • Superseded 100 cm · TRY Plant Trait Database · Measured · 8 observations · 2026-10-09
    TRY 7.0 datasets 7, 25, 28, 45, 50, 66, 92, 116, 164, 174, 178, 203, 251, 273, 309, 335, 349, 419, 429, 500, 559, 574, 818, 853, 882, 897, 918, 926
  • Superseded 100 cm · TRY Plant Trait Database · Measured · 8 observations · 2026-09-17
    TRY 7.0 datasets 7, 25, 28, 45, 50, 66, 92, 116, 164, 174, 178, 203, 251, 273, 309, 335, 349, 419, 429, 500, 559, 574, 818, 853, 882, 897, 918, 926
Sourced
Sexuality empty
2 earlier or rejected values
Not on the record
Vegetable false No source recorded
Source not recorded
Phenology
Bloom months jul, aug, sep, oct
2 earlier or rejected values
  • Superseded jun, jul · TRY Plant Trait Database · Measured · 5 observations · 2026-10-09
    TRY 7.0 datasets 4, 45, 50, 163, 203
  • Superseded jun, jul · TRY Plant Trait Database · Measured · 5 observations · 2026-09-17
    TRY 7.0 datasets 4, 45, 50, 163, 203
Differs from sources
Duration annual, biennial
  • annual, biennial · TRY Plant Trait Database · Measured · 64 observations · 2026-10-09
    TRY 7.0 datasets 4, 7, 25, 50, 71, 92, 110, 164, 175, 178, 193, 203, 559, 818, 882, 918, 925
2 earlier or rejected values
  • Superseded annual, biennial · TRY Plant Trait Database · Measured · 64 observations · 2026-10-09
    TRY 7.0 datasets 4, 7, 25, 50, 71, 92, 110, 164, 175, 178, 193, 203, 559, 818, 882, 918, 925
  • Superseded annual, biennial · TRY Plant Trait Database · Measured · 64 observations · 2026-09-17
    TRY 7.0 datasets 4, 7, 25, 50, 71, 92, 110, 164, 175, 178, 193, 203, 559, 818, 882, 918, 925
Sourced
Fruit months empty
  • jan, feb, aug, sep, oct, nov, dec · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09
    TRY 7.0 datasets 882
2 earlier or rejected values
  • Superseded jan, feb, aug, sep, oct, nov, dec · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09
    TRY 7.0 datasets 882
  • Superseded jan, feb, aug, sep, oct, nov, dec · TRY Plant Trait Database · Measured · 1 observation · 2026-09-17
    TRY 7.0 datasets 882
Not on the record
Ecology
Atmospheric humidity 4 / 9 · moderately dry air No source recorded
Source not recorded
Ground humidity empty
  • 4 / 12 · moderately dry (meso-xerophilous) · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09
    TRY 7.0 datasets 178
2 earlier or rejected values
  • Superseded 4 / 12 · moderately dry (meso-xerophilous) · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09
    TRY 7.0 datasets 178
  • Superseded 4 / 12 · moderately dry (meso-xerophilous) · TRY Plant Trait Database · Measured · 1 observation · 2026-09-17
    TRY 7.0 datasets 178
Not on the record
Light 8 / 9 · light
2 earlier or rejected values
  • Superseded 8 / 9 · light · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09
    TRY 7.0 datasets 178, 489
  • Superseded 8 / 9 · light · TRY Plant Trait Database · Measured · 2 observations · 2026-09-17
    TRY 7.0 datasets 178, 489
Sourced
Nitrogen fixation None
  • None · TRY Plant Trait Database · Measured · 10 observations · 2026-10-09
    TRY 7.0 datasets 37, 71, 89, 193, 444, 822, 882
2 earlier or rejected values
  • Superseded None · TRY Plant Trait Database · Measured · 10 observations · 2026-10-09
    TRY 7.0 datasets 37, 71, 89, 193, 444, 822, 882
  • Superseded None · TRY Plant Trait Database · Measured · 10 observations · 2026-09-17
    TRY 7.0 datasets 37, 71, 89, 193, 444, 822, 882
Sourced
Ph maximum pH 7.2 No source recorded
Source not recorded
Ph minimum pH 4.8 No source recorded
Source not recorded
Soil nutriments 7 / 9 · rich (eutrophic)
  • 6 / 9 · rather rich (meso-eutrophic) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09
    TRY 7.0 datasets 178, 242
2 earlier or rejected values
  • Superseded 6 / 9 · rather rich (meso-eutrophic) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09
    TRY 7.0 datasets 178, 242
  • Superseded 6 / 9 · rather rich (meso-eutrophic) · TRY Plant Trait Database · Measured · 2 observations · 2026-09-17
    TRY 7.0 datasets 178, 242
Differs from sources
Soil salinity 0 / 9 · absent from saline soils
  • 0 / 9 · absent from saline soils · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09
    TRY 7.0 datasets 178, 242
2 earlier or rejected values
  • Superseded 0 / 9 · absent from saline soils · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09
    TRY 7.0 datasets 178, 242
  • Superseded 0 / 9 · absent from saline soils · TRY Plant Trait Database · Measured · 2 observations · 2026-09-17
    TRY 7.0 datasets 178, 242
Sourced
Cultivation
Minimum root depth 19 cm
2 earlier or rejected values
  • Superseded 19 cm · TRY Plant Trait Database · Measured · 19 observations · 2026-10-09
    TRY 7.0 datasets 92, 559, 818
  • Superseded 19 cm · TRY Plant Trait Database · Measured · 19 observations · 2026-09-17
    TRY 7.0 datasets 92, 559, 818
Sourced
Usda legacy
C n ratio empty
2 earlier or rejected values
  • Superseded 19.6 · TRY Plant Trait Database · Measured · 10 observations · 2026-10-09
    TRY 7.0 datasets 7, 70, 228, 412, 727
  • Superseded 19.6 · TRY Plant Trait Database · Measured · 10 observations · 2026-09-17
    TRY 7.0 datasets 7, 70, 228, 412, 727
Not on the record
Other
Propagation method —
2 earlier or rejected values
Not on the record
Salt tolerance —
2 earlier or rejected values
Not on the record
Shade tolerance —
2 earlier or rejected values
Not on the record
Soil ph indicator —
2 earlier or rejected values
Not on the record