Cirsium douglasii Dc.

Douglas' thistle (en)

Species

Angiosperms > Asterales > Asteraceae > Cirsium

Characteristics

A perennial hermaphrodite deciduous herb. It grows 0.6-1.5m high.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.6 - 1.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 7-9
Soil humidity 5-7
Soil texture 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 5-10

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 15 - 18
Germination temperacture (C°) 21 - 23
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Flower

Cirsium douglasii flower picture by FloraRai (cc-by-sa)

Distribution

Cirsium douglasii world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:195282-1
WFO ID wfo-0000062659
COL ID VHV7
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Cirsium douglasii Cirsium breweri var. wrangelii Cirsium douglasii var. douglasii

Lower taxons

Cirsium douglasii var. breweri