Helianthus, Annual Sunflower, Common Sunflower 'Mammoth Russian'

Helianthusannuus

Family
Asteraceae (ass-ter-AY-see-ee)
Genus
Helianthus (hee-lee-AN-thus)
Species
annuus (AN-yoo-us)
Synonym
Other Details
Water Requirements
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
4"-5"
Other details
Soil pH requirements
Patent Information
Propagation Methods
Seed Collecting
Regional

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

College, Alaska

Batesville, Arkansas

Blytheville, Arkansas

Los Angeles, California

Morgan Hill, California

Sacramento, California

Aurora, Colorado

Denver, Colorado

Longmont, Colorado

Jacksonville, Florida

Naples, Florida

Augusta, Georgia

Carrollton, Georgia

Lilburn, Georgia

Roopville, Georgia

Chillicothe, Illinois

Elmhurst, Illinois

Elk Horn, Iowa

Shawnee Mission, Kansas

Wichita, Kansas

Bethelridge, Kentucky

Lewisburg, Kentucky

Battle Creek, Michigan

Macomb, Michigan

Natchez, Mississippi

Hallsville, Missouri

Las Vegas, Nevada

Minden, Nevada

Silver Springs, Nevada

Greenville, New Hampshire

Piscataway, New Jersey

Campbell Hall, New York

Staten Island, New York

Raleigh, North Carolina

Columbia Station, Ohio

Niles, Ohio

Hulbert, Oklahoma

Bend, Oregon

Wilsonville, Oregon

Allentown, Pennsylvania

Kingston, Pennsylvania

Coventry, Rhode Island

North Augusta, South Carolina

Brazoria, Texas

Edinburg, Texas

Fort Worth, Texas(2 reports)

Pearland, Texas

Round Rock, Texas

San Antonio, Texas

Farmington, Utah

Magna, Utah

show all

Featured Videos

Gardener's Notes:

4
positives
3
neutrals
1
negative
Sort By:
Sort By:
Y
Carrollton, GA (Zone 7b) | July 2014 | negative

These were grown in Hard Clay in zone 7B and I don't know if the seeds were a bad batch or not. I got them at Walmart. But all the flower...Read More

L
| May 2014 | positive

American goldfinches and even some red cardinals ate the seeds in autumn and winter. Unfortunately they'll attract aggressive house sparrows too.

J
Elk Horn, IA (Zone 5b) | October 2013 | neutral

Positive: huge easy to grow impressive plant that will have your neighbors concerned and/or extremely interested

Negative:...Read More

D
Mason, NH (Zone 5b) | September 2012 | positive

Planted ours a bit late and as such they did not grow to the common monster proportions they are known for...but they still gave us very ...Read More

C
Elmhurst, IL | August 2011 | neutral

These grew well in my poor soil. Should have followed advice to plant in stages to assure longer bloom. My only complaint is the short li...Read More

C
Broomfield, CO (Zone 5b) | November 2008 | positive

From your friends at Botanical Interests: Towering in the garden at 6'-10' tall, these Mammoth (also called Mammoth Russian) sunflowers o...Read More

A
New Port Richey, FL (Zone 9b) | June 2008 | neutral

These are great, you just have to watch them when they are small because the animals like them. Last year mine got eaten one night. It wa...Read More

B
Lititz, PA (Zone 6a) | September 2004 | positive

Great sunflower kids love it and it attracts lots of birds!~

Featured
Comma Butterfly
(Polygonia c-album)
Red-tailed Black Cockatoo
(Calyptorhynchus banksii)
Featured
Comma Butterfly
(Polygonia c-album)
Red-tailed Black Cockatoo
(Calyptorhynchus banksii)