Coreopsis, Bigflower Coreopsis, Largeflowered Tickseed 'Sunfire'

Coreopsis grandiflora

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Coreopsis (kor-ee-OP-sis) (Info)
Species: grandiflora (gran-dih-FLOR-uh) (Info)
Cultivar: Sunfire
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Category:

Alpines and Rock Gardens

Perennials

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Flowers are good for cutting

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

Flowers are fragrant

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Grow outdoors year-round

Suitable for growing in containers

Height:

18-24 in. (45-60 cm)

Spacing:

12-15 in. (30-38 cm)

15-18 in. (38-45 cm)

Hardiness:

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)

Sun Exposure:

Full Sun

Sun to Partial Shade

Danger:

N/A

Bloom Color:

Gold (Yellow-Orange)

Bright Yellow

Maroon (Purple-Brown)

Bloom Time:

Late Spring/Early Summer

Mid Summer

Foliage:

Herbaceous

Smooth-Textured

Other details:

Unknown - Tell us

Soil pH requirements:

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

7.9 to 8.5 (alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing the rootball

From seed; direct sow outdoors in fall

From seed; sow indoors before last frost

Self-sows freely; deadhead if you do not want volunteer seedlings next season

Seed Collecting:

Collect seedhead/pod when flowers fade; allow to dry

Properly cleaned, seed can be successfully stored

Regional

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

Valley Center, California

Albertville, Minnesota

Elizabeth City, North Carolina

Cleveland, Ohio

Baden, Pennsylvania

Hummelstown, Pennsylvania

Knoxville, Tennessee

Amarillo, Texas

Haltom City, Texas

Houston, Texas

Los Fresnos, Texas

Spring, Texas

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Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Jul 15, 2013, drobarr from Hummelstown, PA (Zone 6b) wrote:

Beautiful flowers begining around early June. Must be dead headed to produce additional flowers as well as have plenty of moisture. Mine seems to be quite susceptible to powdery mildew.

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