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Coreopsis, Bigflower Coreopsis, Largeflowered Tickseed 'Sunfire'

Coreopsisgrandiflora

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Coreopsis grandiflora by DaylilySLP
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Family
Asteraceae (ass-ter-AY-see-ee)
Info
Genus
Coreopsis (kor-ee-OP-sis)
Info
Species
grandiflora (gran-dih-FLOR-uh)
Info
Synonym
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Herbaceous
Smooth
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)
Danger
N/A
Bloom Color
Gold (yellow-orange)
Bright Yellow
Maroon/Burgundy
Bloom Time
Late Spring/Early Summer
Mid Summer
Other Details
Category
Alpines and Rock Gardens
Perennials
Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Foliage Color

Unknown - Tell us

Where to Grow
Grow outdoors year-round in hardiness zone
Can be grown as an annual
Bloom Characteristics
Flowers are good for cutting
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Bloom Size

Unknown - Tell us

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 is said to grow outdoors 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

South Jordan, Utah

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drobarr
Hummelstown, PA (Zone 6b) | July 2013 | positive

Beautiful flowers begining around early June. Must be dead headed to produce additional flowers as well as have plenty of moisture. Min...Read More

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