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PlantFiles: Maximillian Sunflower, Prairie Sunflower
Helianthus maximilianii 'Dakota Sunshine'

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Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Helianthus (hee-lee-AN-thus) (Info)
Species: maximilianii (maks-ih-mill-ee-ANE-ee-eye) (Info)
Cultivar: Dakota Sunshine

One vendor has this plant for sale.

Category:
Perennials

Height:
4-6 ft. (1.2-1.8 m)

Spacing:
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)

Hardiness:
USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:
Full Sun

Danger:
Unknown - Tell us

Bloom Color:
Gold (Yellow-Orange)

Bloom Time:
Mid Summer
Late Summer/Early Fall

Foliage:
Grown for foliage
Herbaceous

Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping
This plant is resistant to deer

Soil pH requirements:
Unknown - Tell us

Patent Information:
Non-patented

Propagation Methods:
By dividing the rootball
From herbaceous stem cuttings

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Profile:

No positives
No neutrals
1 negative

Gardeners' Notes:

RatingAuthorContent
Negative vorlonken On Apr 29, 2012, vorlonken from Andover, CT wrote:

This plant became a menace in my zone 5 garden after just two years. I had it growing in full sun but the plant still flopped over before it bloomed. It did produce large numbers of blooms, but they were laying on the ground and since they're a good 6' to 8' tall they covered other things. It spread too quickly, easily doubling the size of the clump each year.

I just moved part of it to a location where I don't care if it spreads; the rest I sprayed with Roundup. If you plant it in your garden be prepared for it to be quite a bully when it comes to space.

Regional...

This plant has been said to grow in the following regions:

Andover, Connecticut
Iowa City, Iowa
Kinnear, Wyoming
Pavillion, Wyoming
Riverton, Wyoming



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