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Helianthus, Annual Sunflower, Common Sunflower 'SunDuke Mammoth'

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
8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)
Spacing
9-12 in. (22-30 cm)
Hardiness
Not Applicable
Danger
N/A
Bloom Color
Gold (yellow-orange)
Bloom Time
Mid Summer
Other Details
Category
Annuals
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color

Unknown - Tell us

Where to Grow
Can be grown as an annual
Bloom Characteristics
Flowers are good for cutting
This plant is attractive to bees, butterflies and/or birds
Bloom Size

Unknown - Tell us

Other details

Unknown - Tell us

Soil pH requirements

Unknown - Tell us

Patent Information

Unknown - Tell us

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
Bag seedheads to capture ripening seed
Collect seedhead/pod when flowers fade; allow to dry
Allow pods to dry on plant; break open to collect seeds
Allow seedheads to dry on plants; remove and collect seeds
Allow unblemished fruit to ripen; clean and dry seeds
Properly cleaned, seed can be successfully stored
Regional

This plant is said to grow outdoors in the following regions:

Dunnellon, Florida

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