Data sources

Each value Trefle shows for Populus fremontii, 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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Sourced10 Differs from sources1 Source not recorded15 Not on the record4 Sources: TRY Plant Trait Database

Field	Shown	What the sources say
Core
Author	S.Watson	No source recorded	Source not recorded
Bibliography	Proc. Amer. Acad. Arts 10: 350 (1875)	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	1875	No source recorded	Source not recorded
Descriptive
Common name	Fremont's cottonwood	No source recorded	Source not recorded
Observations	NW. U.S.A. to NW. Mexico	No source recorded	Source not recorded
Morphology
Average height	2872 cm	2871.6 cm · TRY Plant Trait Database · Measured · 6 observations · 2026-10-09 TRY 7.0 datasets 20, 68, 92, 184, 909	Differs from sources
Flower color	white	white · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Sourced
Flower conspicuous	false	No source recorded	Source not recorded
Foliage color	green	green · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Sourced
Foliage texture	medium	medium · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Sourced
Fruit color	white	white · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Sourced
Fruit conspicuous	false	No source recorded	Source not recorded
Growth form	Single Stem	No source recorded	Source not recorded
Growth habit	Tree	No source recorded	Source not recorded
Growth rate	Rapid	Rapid · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Sourced
Maximum height	3450 cm	3450 cm · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 20, 68, 92, 184, 909	Sourced
Sexuality	dioecious	dioecious · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 365	Sourced
Vegetable	false	No source recorded	Source not recorded
Phenology
Duration	perennial	perennial · TRY Plant Trait Database · Measured · 6 observations · 2026-10-09 TRY 7.0 datasets 92, 365, 818	Sourced
Ecology
Nitrogen fixation	None	None · TRY Plant Trait Database · Measured · 11 observations · 2026-10-09 TRY 7.0 datasets 20, 57, 67, 96, 444, 822	Sourced
Ph maximum	pH 8	No source recorded	Source not recorded
Ph minimum	pH 6	No source recorded	Source not recorded
Cultivation
Minimum root depth	73 cm	73 cm · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 92, 432	Sourced
Usda legacy
C n ratio	empty	41.4 · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 412	Not on the record
Other
Human usage type	—	coppice_potential, fuelwood · TRY Plant Trait Database · Reported · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Salt tolerance	—	Low · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Shade tolerance	—	None · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record

Populus fremontii S.Watson, 1875 43% complete

Fremont's cottonwood

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Data sources