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Dark Red Sunflower Helianthus atrorubens

Previously known as:

  • Discomela atrorubens
  • Helianthus atrorubens var. alsodes
  • Helianthus sparsifolius
Phonetic Spelling
hee-lee-AN-thus a-tro-ROO-bens
Description

The Appalachian sunflower is a clumping, rhizomatous, herbaceous perennial, native from New Jersey to the Southeastern United States. This wildflower is typically found in woodlands or along roadside banks of dry, rocky, sandy, or clay soils. It is commonly found in the Piedmont and most of the Coastal Plains of North Carolina; however, it is rarely seen in the northeastern Coastal Plains or in the northern mountains. This species grows from 3 to 5 feet tall with an erect stem of mostly basal foliage, and has small clusters of daisy-like flowers with yellow petals and a dark brownish-purple center disk. It is a member of the daisy family (Asteraceae). The specific epithet, atrorubens, is derived from the Latin words ater, meaning dark, and rubra, meaning red.

This plant prefers full sun and tolerates partial shade. It thrives in moist, well-drained, sandy, rocky, or clay soils with alkaline to neutral pH. Drought and dry soil-tolerant once the plant is established. To prolong the blooming season, deadhead the spent blooms. As the plant begins to fade and die back in the fall, cut the plant back to ground level. It is best propagated by seeds or division. 

Click here to see a calendar of planting schedules, time-to-harvest, and recommended spacing.

The plant has a clumping habit and an erect, rough, hairy greenish to purple stems. Its green leaves are mostly basal, while the mid and upper stem leaves are smaller and fewer. It has small clusters of flowers. Each flower measures 2 to 3 inches wide with yellow petal rays and a brownish-purple center disk of tubular florets. This species is easily identified in the wild; its stem has only a few leaves, and the flower has a brownish-purple center disk.

This low-maintenance plant excels in open woodland gardens, cottage gardens, and mixed perennial beds, attracting bees and butterflies. The woodland birds will enjoy collecting their seeds..  

Insects, Diseases, and Other Plant Problems:  No serious insect or disease problems. Monitor for slugs and snails. May be susceptible to powdery mildew and white mold. May require staking to support the flowers and stems.  

More information on Helianthus.

See this plant in the following landscape:
Cultivars / Varieties:
Tags:
#deciduous#drought tolerant#cottage garden#fire medium flammability#NC native#deer resistant#herbaceous perennial#native garden#pollinator plant#native wildflower#larval host plant#food source fall#NC Native Pollinator Plant#food source herbage#food source nectar#food source pollen#bird friendly#dry soils tolerant#food source hard mast fruit#butterfly friendly#nectar plant late summer#nectar plant early fall#nectar plant mid-fall#Audubon#silvery checkerspot butterfly#full sun#wildflower#wildlife friendly#woodland#HS303
 
Cultivars / Varieties:
Tags:
#deciduous#drought tolerant#cottage garden#fire medium flammability#NC native#deer resistant#herbaceous perennial#native garden#pollinator plant#native wildflower#larval host plant#food source fall#NC Native Pollinator Plant#food source herbage#food source nectar#food source pollen#bird friendly#dry soils tolerant#food source hard mast fruit#butterfly friendly#nectar plant late summer#nectar plant early fall#nectar plant mid-fall#Audubon#silvery checkerspot butterfly#full sun#wildflower#wildlife friendly#woodland#HS303
  • Attributes:
    Genus:
    Helianthus
    Species:
    atrorubens
    Family:
    Asteraceae
    Life Cycle:
    Perennial
    Recommended Propagation Strategy:
    Division
    Seed
    Country Or Region Of Origin:
    New Jersey to the Southeastern United States
    Distribution:
    Native: United States--AL, FL, GA, KY, LA, NJ, NC, SC, TN, and VA. Introduced: Turkmenistan
    Fire Risk Rating:
    medium flammability
    Wildlife Value:
    Flowers provide nectar to pollinators from July until the first frost. This is a larval host plant that supports Silvery Checkerspot (Chlosyne nycteis). The Silvery Checkerspot has at least 1-2 broods in the north from June to July, in the deep south and Texas, they have as many as 3 to 4 broods from May through September. Songbirds, ruffed grouse, quail, morning doves, and small mammals enjoy the seeds.
    Play Value:
    Attractive Flowers
    Attracts Pollinators
    Colorful
    Easy to Grow
    Wildlife Food Source
    Wildlife Larval Host
    Dimensions:
    Height: 3 ft. 0 in. - 5 ft. 0 in.
    Width: 1 ft. 0 in. - 3 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Herbaceous Perennial
    Native Plant
    Wildflower
    Woody Plant Leaf Characteristics:
    Deciduous
    Habit/Form:
    Erect
    Growth Rate:
    Rapid
    Maintenance:
    Low
    Texture:
    Coarse
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Texture:
    Clay
    Sand
    Shallow Rocky
    Soil pH:
    Alkaline (>8.0)
    Neutral (6.0-8.0)
    Soil Drainage:
    Good Drainage
    Moist
    Occasionally Dry
    Available Space To Plant:
    3 feet-6 feet
    NC Region:
    Coastal
    Mountains
    Piedmont
    USDA Plant Hardiness Zone:
    6a, 6b, 7a, 7b, 8a, 8b
  • Fruit:
    Fruit Color:
    Brown/Copper
    Display/Harvest Time:
    Fall
    Fruit Type:
    Achene
    Fruit Length:
    < 1 inch
    Fruit Width:
    < 1 inch
    Fruit Description:
    The fruit is a dark brown, narrow, oval achene that is slightly bristled. The achene is 2.8 to 3 mm long. Displays from September to November.
  • Flowers:
    Flower Color:
    Brown/Copper
    Gold/Yellow
    Purple/Lavender
    Flower Inflorescence:
    Head
    Flower Value To Gardener:
    Showy
    Flower Bloom Time:
    Fall
    Summer
    Flower Shape:
    Radial
    Flower Petals:
    7 - 20 petals/rays
    Bracts
    Flower Size:
    1-3 inches
    Flower Description:
    The flower heads appear in small clusters. The daisy-like flower measures up to 3 inches wide and has 10 to 15 yellow ray florets that surround a dark brownish-purple disk of tubular florets. There are several flowers on individual 3-inch pedicels. There are bracts at the base of the head that overlap and are oval or oblong-shaped. Blooming occurs from August to November.
  • Leaves:
    Woody Plant Leaf Characteristics:
    Deciduous
    Leaf Color:
    Green
    Leaf Feel:
    Rough
    Leaf Type:
    Simple
    Leaf Arrangement:
    Opposite
    Leaf Shape:
    Lanceolate
    Ovate
    Leaf Margin:
    Crenate
    Serrate
    Hairs Present:
    Yes
    Leaf Length:
    3-6 inches
    Leaf Width:
    1-3 inches
    Leaf Description:
    The leaves are primarily basal, appearing at the lower stem. They are opposite in arrangement, lanceolate to ovate with crenate or serrate margins. The leaf base is cuneate (wedge-shaped) or truncate (ends abruptly). The mid to upper stem leaves are fewer and smaller, and there are usually 3 to 6 pairs of stem leaves. Leaves are hairy and rough on top, pubescent on the bottom. The leaf size measures from 3 to 10 inches long and 1 to 4 inches wide; however, the leaves become noticeably smaller as they ascend the stem. Leaf pairs are present in a whorled pattern around the stem. The petioles often have a winged appearance.
  • Stem:
    Stem Color:
    Green
    Purple/Lavender
    Stem Is Aromatic:
    No
    Stem Surface:
    Hairy (pubescent)
    Stem Description:
    The green to purplish stems may be simple or have a few branches. The lower stem is very hairy. As the leaf pairs reduce in size toward the upper part of the stem, the stem becomes pubescent to glabrous.
  • Landscape:
    Landscape Location:
    Meadow
    Naturalized Area
    Woodland
    Landscape Theme:
    Butterfly Garden
    Cottage Garden
    Cutting Garden
    Native Garden
    Pollinator Garden
    Design Feature:
    Border
    Attracts:
    Butterflies
    Pollinators
    Songbirds
    Resistance To Challenges:
    Deer
    Drought
    Dry Soil