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Sunflower Helianthus

Other plants called Sunflower:

Phonetic Spelling
hee-lee-AN-thus
Description

There are 150 species of sunflower, including H. annuus, the giant sunflower from which we get seed and oil, and H. tuberosum, the roots of which form Jerusalem Artichokes. All species are tall and many can be invasive, but their bright yellow summer and fall flowers make up for any inconvenience.

Although generally preferring moist soil, some species will tolerate poor drainage.

 

Cultivars / Varieties:
Tags:
#bees#yellow#invasive#summer#perennial#wildflowers#weedy#nectar plant#fall interest#specialized bees#moist soil#pollinator plant#bird friendly#butterfly friendly
 
Cultivars / Varieties:
Tags:
#bees#yellow#invasive#summer#perennial#wildflowers#weedy#nectar plant#fall interest#specialized bees#moist soil#pollinator plant#bird friendly#butterfly friendly
  • Attributes:
    Genus:
    Helianthus
    Family:
    Asteraceae
    Uses (Ethnobotany):
    Flowers can be used to produce a yellow dye.
    Recommended Propagation Strategy:
    Division
    Seed
    Stem Cutting
    Country Or Region Of Origin:
    North, South, Central Americas
    Distribution:
    Americas Europe
    Wildlife Value:
    It is a great late season nectar plant for butterflies. Birds are attracted to seeds so leave standing dead flowers into the winter as natural bird feeders. Members of the genus Helianthus support the following specialized bees: Andrena (Callandrena s.l.) accepta, Andrena (Callandrena s.l.) aliciae, Andrena (Callandrena s.l.) helianthi, Melissodes (Eumelissodes) agilis, Dieunomia (Dieunomia) heteropoda, Megachile (Sayapis) pugnata, and Paranthidium (Paranthidium) jugatorium. This plant is occasionally damaged by deer.
    Edibility:
    The seeds are eaten and are a source of one of the most important vegetable oils. The leaves and stalks are food for livestock.
  • Whole Plant Traits:
    Plant Type:
    Perennial
    Wildflower
    Leaf Characteristics:
    Deciduous
    Habit/Form:
    Clumping
    Erect
    Spreading
    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 Drainage:
    Good Drainage
    Moist
    Available Space To Plant:
    12 inches-3 feet
    NC Region:
    Coastal
    Mountains
    Piedmont
    Usda Plant Hardiness Zone:
    6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
  • Fruit:
    Fruit Color:
    Black
    Fruit Value To Gardener:
    Edible
    Display/Harvest Time:
    Fall
    Fruit Type:
    Achene
    Fruit Length:
    < 1 inch
    Fruit Width:
    < 1 inch
  • Flowers:
    Flower Color:
    Gold/Yellow
    Flower Inflorescence:
    Head
    Flower Value To Gardener:
    Long Bloom Season
    Showy
    Flower Bloom Time:
    Fall
    Summer
    Flower Shape:
    Radial
    Flower Petals:
    7 - 20 petals/rays
    Flower Size:
    3-6 inches
    Flower Description:
    bright yellow ray florets at the outside and yellow or as brown/red) disc florets inside
  • Leaves:
    Leaf Characteristics:
    Deciduous
    Leaf Arrangement:
    Other/more complex
    Hairs Present:
    No
    Leaf Description:
    Basal rosette and reduced size leaves along flowering stem. The lower leaves are opposite, ovate, or cordate. Upper leaves are alternate and narrower. Petiolate leaves are dentate and may be sticky.
  • Stem:
    Stem Is Aromatic:
    No
  • Landscape:
    Landscape Location:
    Naturalized Area
    Landscape Theme:
    Butterfly Garden
    Native Garden
    Pollinator Garden
    Design Feature:
    Mass Planting
    Small groups
    Attracts:
    Pollinators
    Specialized Bees
    Resistance To Challenges:
    Deer
    Drought
    Dry Soil