Helianthus annuus (Annual sunflower)

Fast growing, drought tolerant native annual with yellow flowers and large dark centers, blooming March to October. Smaller flower heads than commercial types used in food and oil production. May reach up to 10 ft. in height. Prefers disturbed ground and waste areas such as abandoned fields, roadsides and gravel pits; up to 10,000 ft. elevation. Easily established, often forming large colonies; tolerant of clay soils. Seeds are winter food for many birds. Visited by butterflies and bees. State flower of Kansas.

native distribution

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INFORMATION & ATTRIBUTES

Family: Asteraceae

Duration: Perennial

Growth Habit: Forb/herb

Native Status: Native

Growth Form: Single crown

Mature Height: 9 ft.

Bloom Color: Yellow

Bloom Period: Summer

Annual Precipitation: 12-60 in.

Drought Tolerance: Medium

Shade Tolerance: Intolerant

Elevation:

Wetland Indicator Status: FACU

Fire Resistance: No

Fire Tolerance: None

Nitrogen fixation:

SOIL ADAPTATION

Coarse Texture: Yes

Medium Texture: Yes

Fine Texture: Yes

Salinity Tolerance: Medium

CaCO3 Tolerance: Medium

pH Range: 5.5-7.8


SEEDING NOTES

Seeds per Pound: 46,900

Seeding Rate: 10-20 PLS lbs/acre

Season: 

Days to Germination:


VARIETIES & LOCAL ACCESSIONS

None