Rudbeckia L.

Coneflower (en), Rudbéckie (fr)

Genus

Angiosperms > Asterales > Asteraceae

Characteristics

Annual or perennial herbs. Lvs alternate, simple and entire to 2-pinnatifid, or pinnate. Capitula pedunculate, solitary or in loose cymes. Involucral bracts in 1-3 rows, foliaceous. Receptacle conic; scales present. Outer florets sterile, ligulate, yellow or orange, sometimes with darker markings at base. Inner florets ☿, tubular. Achenes all similar, narrowed to base, 4-angled but not winged, glabrous; pappus a small corona or 0.
Life form
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 0.5 - 1.0
Mature height (meter) 0.5 - 1.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 1-6
Soil humidity -
Soil texture -
Soil acidity 2-8
Soil nutriment -
Hardiness (USDA) 7-10

Usage

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

Cultivation

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