Coreopsis, Bigflower Coreopsis, Largeflowered Tickseed 'Tetra-Giants'

Coreopsisgrandiflora

Family
Asteraceae (ass-ter-AY-see-ee)
Genus
Coreopsis (kor-ee-OP-sis)
Species
grandiflora (gran-dih-FLOR-uh)
Synonym
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Deciduous
Herbaceous
Height
24-36 in. (60-90 cm)
Spacing
18-24 in. (45-60 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)
Danger
N/A
Bloom Color
Bright Yellow
Bloom Time
Mid Spring
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Other Details
Category
Perennials
Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Can be grown as an annual
Bloom Characteristics
Flowers are good for cutting
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
Soil pH requirements
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Propagation Methods
By dividing the rootball
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
Direct sow as soon as the ground can be worked
From seed; sow indoors before last frost
From seed; direct sow after last frost
From seed; germinate in a damp paper towel
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Regional

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

Saint Joseph, Missouri

Buffalo, New York

Elba, New York

Candler, North Carolina

Cary, North Carolina

Greensboro, North Carolina

Burleson, Texas

Fort Worth, Texas(3 reports)

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Gardener's Notes:

1
positive
0
neutral
0
negative
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D
St Joseph, MO | June 2015 | positive

If you like Coreopsis and large flowers, this is the one for you. Grows three plus feet high and the flowers are 3 - 4 inches across....Read More

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