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Asteraceae
Helianthus, Annual Sunflower, Common Sunflower 'Bicentenary'
Helianthusannuus
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Family
Asteraceae
(ass-ter-AY-see-ee)
Info
Genus
Helianthus
(hee-lee-AN-thus)
Info
Species
annuus
(AN-yoo-us)
Info
Synonym
Sun Exposure
Full Sun
Foliage
Succulent
Height
4-6 ft. (1.2-1.8 m)
Spacing
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
Hardiness
Not Applicable
Danger
N/A
Bloom Color
Bright Yellow
Brown/Bronze
Bloom Time
Mid Summer
Late Summer/Early Fall
Mid Fall
Other Details
Category
Annuals
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Bronze
Where to Grow
Unknown - Tell us
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Unknown - Tell us
Other details
Unknown - Tell us
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Non-patented
Propagation Methods
From seed; sow indoors before last frost
From seed; direct sow after last frost
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Seed Collecting
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Regional
This plant is said to grow outdoors in the following regions:
Garland, Texas
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2 members have or want this plant for trade
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