Data sources

Each value Trefle shows for Sonchus oleraceus, 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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Sourced16 Differs from sources3 Source not recorded10 Not on the record8 Sources: TRY Plant Trait Database, Earlier Trefle data

Field	Shown	What the sources say
Core
Author	L.	No source recorded	Source not recorded
Bibliography	Sp. Pl.: 794 (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	Common sowthistle	No source recorded	Source not recorded
Family common name	Aster family	No source recorded	Source not recorded
Observations	Macaronesia, Europe to Medit., Sahara to Arabian Pen.	No source recorded	Source not recorded
Morphology
Average height	66 cm	66.35 cm · TRY Plant Trait Database · Measured · 34 observations · 2026-10-09 TRY 7.0 datasets 25, 28, 86, 98, 164, 175, 178, 203, 251, 301, 429, 468, 474, 500, 544, 574, 581, 598, 600, 655, 853, 882, 897	Differs from sources
Biological type	therophyte	therophyte · TRY Plant Trait Database · Measured · 18 observations · 2026-10-09 TRY 7.0 datasets 4, 25, 71, 98, 164, 174, 175, 178, 203, 350, 500, 544, 600, 655, 882, 918	Sourced
Flower color	orange, yellow	orange, yellow · TRY Plant Trait Database · Measured · 7 observations · 2026-10-09 TRY 7.0 datasets 4, 350, 655, 877, 882	Sourced
Foliage color	green	green · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 443, 879	Sourced
Foliage texture	fine	fine · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 4, 71, 98, 443, 879	Sourced
Fruit color	brown	brown · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 882	Sourced
Fruit shape	achene	achene · TRY Plant Trait Database · Measured · 5 observations · 2026-10-09 TRY 7.0 datasets 4, 600, 882	Sourced
Growth habit	Forb/herb	Forb/herb · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Inflorescence type	empty	head · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 350	Not on the record
Maximum height	empty	No source recorded 1 earlier or rejected value Rejected 40 cm · TRY Plant Trait Database · Measured · 10 observations · 2026-10-09 TRY 7.0 datasets 25, 28, 86, 98, 164, 175, 178, 203, 251, 301, 429, 468, 474, 500, 544, 574, 581, 598, 600, 655, 853, 882, 897 below the average height (66 cm) of the same record	Not on the record
Sexuality	empty	hermaphrodite · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 4	Not on the record
Vegetable	false	No source recorded	Source not recorded
Phenology
Bloom months	jan, mar, jun, jul	jan, mar, jun, jul · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 4, 174, 203, 600	Sourced
Duration	annual, biennial, perennial	annual, biennial, perennial · TRY Plant Trait Database · Measured · 40 observations · 2026-10-09 TRY 7.0 datasets 4, 25, 28, 71, 86, 98, 110, 164, 175, 178, 203, 236, 301, 443, 460, 598, 818, 879, 882, 918	Sourced
Fruit months	empty	jan, feb, mar, apr, may, jun, jul, aug, sep, oct, nov, dec · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 882	Not on the record
Ecology
Atmospheric humidity	2 / 9 · dry air	2 / 9 · dry air · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Ground humidity	5 / 12 · fresh, never flooded (mesohydric)	5 / 12 · fresh, never flooded (mesohydric) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 178, 242	Sourced
Light	8 / 9 · light	7 / 9 · half-light to light · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 178	Differs from sources
Nitrogen fixation	None	None · TRY Plant Trait Database · Measured · 5 observations · 2026-10-09 TRY 7.0 datasets 71, 445, 882	Sourced
Ph maximum	pH 8	pH 8 · Earlier Trefle data · Inferred · 2026-10-19 value present before provenance tracking (2022 import), no source recorded derived from a Baseflor soil reaction class by the 2022 import, a class not a measurement	Sourced
Ph minimum	pH 7.5	pH 7.5 · Earlier Trefle data · Inferred · 2026-10-19 value present before provenance tracking (2022 import), no source recorded derived from a Baseflor soil reaction class by the 2022 import, a class not a measurement	Sourced
Soil nutriments	7 / 9 · rich (eutrophic)	8 / 9 · very rich (pereutrophic) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 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	Sourced
Cultivation
Minimum root depth	39 cm	39 cm · TRY Plant Trait Database · Measured · 8 observations · 2026-10-09 TRY 7.0 datasets 474, 818, 898	Sourced
Other
Halophyte status	—	None · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 877	Not on the record
Propagation method	—	seed · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 174	Not on the record
Shade tolerance	—	None · TRY Plant Trait Database · Measured · 6 observations · 2026-10-09 TRY 7.0 datasets 174	Not on the record
Soil ph indicator	—	8 · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 178, 242	Not on the record

Sonchus oleraceus L., 1753 50% complete

Common sowthistle

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Data sources