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Giant Coneflower

Rudbeckia maxima

Other common name(s):

Great Coneflower, Giant Brown-eyed Susan, Cabbage Coneflower

Family:

Asteraceae (Aster Family)

Plant Ecoregion Distribution Map

East Central Texas Plains, Western Gulf Coastal Plain
Northern Post Oak Savanna, Northern Prairie Outliers
Flatwoods, Floodplains and Low Terraces3, Pleistocene Fluvial Terraces, Red River Bottomlands, Southern Tertiary Uplands, Tertiary Uplands

Plant Characteristics

Growth Form

Herbaceous

Height

3
to
6
ft.

Spread

1
to
2
ft.

Leaf Retention

Deciduous

Lifespan

Perennial

Habitat and Care Requirements

Soil Type(s)

Sand, Moist

Light Requirement

Sun

Water Requirement

High

Native Habitat

Grassland, Wetland or Riparian

Bloom and Attraction

Bloom Color

Yellow

Bloom Season

Spring, Summer

Seasonal Interest

Pollen

Wildlife Benefit

Bees

Maintenance

Requires water. Should be cut back to the base after blooming to keep tidy and be planted in mass for best effect in landscapes. Good Cut Flowers. Propagation: Seed.

Comments

Blooms March-September. Giant Coneflower has clumps of silvery-blue foliage with a tall, stately flower stalk. The flowers have intense yellow ray flowers that dangle from tall brown centers. Pollination: Nectar insects, special value to native bees.

References

1) Griffith, Bryce, Omernick & Rodgers (2007). Ecoregions of Texas. 2) https://www.wildflower.org/plants/result.php?id_plant=RUMA3. 3) https://portal.torcherbaria.org/portal/taxa/index.php?taxon=Rudbeckia+maxima&formsubmit=Search+Terms. 4) http://bonap.net/TDC/Image/Map?taxonType=Species&taxonId=4206&locationType=County&mapType=Normal, 5) https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=36776#null

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State Office Phone: 830.997.9272

State Office Address:
Native Plant Society of Texas
PO Box 3017
Fredericksburg, TX 78624

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