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Helianthus, Annual Sunflower, Common Sunflower 'American Giant'

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

Unknown - Tell us

Height
12-15 ft. (3.6-4.7 m)
Spacing
24-36 in. (60-90 cm)
Hardiness
Not Applicable
Danger
N/A
Bloom Color
Bright Yellow
Bloom Time
Mid Summer
Other Details
Category
Annuals
Water Requirements

Unknown - Tell us

Foliage Color

Unknown - Tell us

Where to Grow

Unknown - Tell us

Bloom Characteristics

Unknown - Tell us

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; direct sow after last frost
Seed Collecting
Collect seedhead/pod when flowers fade; allow to dry
Regional

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

Natchez, Mississippi

Trenton, New Jersey

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