Helianthus, Annual Sunflower, Common Sunflower 'Kong'

Helianthusannuus

Family
Asteraceae (ass-ter-AY-see-ee)
Genus
Helianthus (hee-lee-AN-thus)
Species
annuus (AN-yoo-us)
Synonym
Sun Exposure
Full Sun
Foliage
Herbaceous
This plant is resistant to deer
Height
8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)
Spacing
18-24 in. (45-60 cm)
Hardiness
Not Applicable
Danger
N/A
Bloom Color
Bright Yellow
Bloom Time
Mid Summer
Late Summer/Early Fall
Other Details
Category
Annuals
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
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)
7.9 to 8.5 (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
Regional

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

Phoenix, Arizona

Denver, Colorado

Divernon, Illinois

Brainerd, Minnesota

Los Alamos, New Mexico

Zanesville, Ohio

Willow Grove, Pennsylvania

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Gardener's Notes:

3
positives
0
neutral
0
negative
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J
J
Denver, CO | September 2008 | positive

This was my second season planting "Kong". Awesome! Some I let grow to over 10ft tall, others I kept trimmed -4ft (the leaves grew -4ft b...Read More

Z
Zanesville, OH (Zone 6a) | February 2007 | positive

I agree with the previous post. My husband and I were blown away by this sunflower and we've grown other sunflowers before. We plan to gr...Read More

W
(Zone 1) | November 2005 | positive

10+ Foot Tall Multi-Headed Sunflower

This thing is a monster. It is a perfect sunflower for a summer hedge or sunflower ho...Read More

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