Helianthus, Annual Sunflower, Common Sunflower
Helianthusannuus 'American Giant'

Category
Annuals

Water Requirements

Sun Exposure
Full Sun

Foliage

Foliage Color

Height
12-15 ft. (3.6-4.7 m)

Spacing
24-36 in. (60-90 cm)

Hardiness
Not Applicable

Where to Grow

Danger
N/A

Bloom Color
Bright Yellow

Bloom Characteristics

Bloom Size

Bloom Time
Mid Summer

Other details

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