Photo by Melody

PlantFiles: Sunflower
Helianthus annuus 'Skyscraper'

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Helianthus (hee-lee-AN-thus) (Info)
Species: annuus (AN-yoo-us) (Info)
Cultivar: Skyscraper

2 vendors have this plant for sale.

4 members have or want this plant for trade.


8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)

9-12 in. (22-30 cm)

Not Applicable

Sun Exposure:
Full Sun


Bloom Color:
Bright Yellow

Bloom Time:
Mid Summer
Late Summer/Early Fall


Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater
Self-sows freely; deadhead if you do not want volunteer seedlings next season
This plant is resistant to deer

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:

Propagation Methods:
From seed; sow indoors before last frost
From seed; direct sow after last frost

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds

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By dave
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1 positive
No neutrals
No negatives

Gardeners' Notes:

Positive trifunov On Oct 16, 2004, trifunov from Brandon, MS (Zone 8a) wrote:

The bloom on this sunflower is easily more than 1ft across the center, not including the petals. The ones I saw tended to droop due to the weight of the blooms, but they were nonetheless very eyecatching due to their sheer size.


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

Palm Bay, Florida
Carnesville, Georgia
Barbourville, Kentucky
Brandon, Mississippi
Natchez, Mississippi
Bloomingdale, New Jersey
Lenoir City, Tennessee
Manchaca, Texas

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