Blanket Flower, Indian Blanket, Gaillardia 'Portola Giants'

Gaillardia x grandiflora

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Gaillardia (gay-LAR-dee-uh) (Info)
Species: x grandiflora (gran-dih-FLOR-uh) (Info)
Cultivar: Portola Giants



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


18-24 in. (45-60 cm)

24-36 in. (60-90 cm)


12-15 in. (30-38 cm)


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)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:

Full Sun



Bloom Color:



Bright Yellow

Bloom Time:

Mid Summer

Late Summer/Early Fall

Mid Fall

Blooms repeatedly



Other details:

Unknown - Tell us

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:

Unknown - Tell us

Propagation Methods:

By dividing the rootball

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

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:

Allow seedheads to dry on plants; remove and collect seeds

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


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

Palm Desert, California

Largo, Florida

Live Oak, Florida

Panama City, Florida

Windsor, Illinois

Pineville, Louisiana

Swanzey, New Hampshire

Albany, New York

Troy, New York

Charlotte, North Carolina

Grandy, North Carolina

Hood River, Oregon

North Augusta, South Carolina

Gainesville, Texas

Salt Lake City, Utah

Clarkston, Washington

Moxee, Washington

Madison, Wisconsin

Oshkosh, Wisconsin

show all

Gardeners' Notes:


On Apr 10, 2007, Photographer from Moxee, WA (Zone 4a) wrote:

This plant thrives in our region. I have more of it than almost every other flower. It just keeps spreading.


On Feb 5, 2006, Gabrielle from (Zone 5a) wrote:

Very pretty flowers, but it does have a tendency to flop. It will self-seed some. Light aids germination of seeds.