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Rudbeckia grandiflora (Sweet) C.C.Gmel. ex Dc.

Rough coneflower (en)

Species

Angiosperms > Asterales > Asteraceae > Rudbeckia

Characteristics

An Ozarkian sp. with larger heads (rays 3–5 cm) and with the lvs hirsute on both sides, barely enters our range in c. Mo. as an introduction.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 0.5 - 1.0
Mature height (meter) 1.15 - 1.85
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 4-9
Soil humidity 3-5
Soil texture 3-4
Soil acidity 2-8
Soil nutriment -
Hardiness (USDA) 6-9

Usage

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

Cultivation

Can be grown by divisions or seedlings. Seeds needs stratification.
Mode divisions seedlings
Germination duration (days) 5 - 21
Germination temperacture (C°) 21
Germination luminosity light
Germination treatment stratification
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Rudbeckia grandiflora unspecified picture

Distribution

Rudbeckia grandiflora world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:30119988-2
WFO ID wfo-0000014222
COL ID 4TMB2
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Rudbeckia grandiflora Centrocarpha grandiflora Rudbeckia nudicaulis Centrocarpha grandiflora

Lower taxons

Rudbeckia grandiflora var. alismifolia
WorldFloraDB 2024