Family: Asteraceae (ass-ter-AY-see-ay) (Info)
Genus: Coreopsis (kor-ee-OP-sis) (Info)
Species: grandiflora (gran-dih-FLOR-uh) (Info)
Cultivar: Tetra Giants
Category:
Perennials
Height:
24-36 in. (60-90 cm)
Spacing:
9-12 in. (22-30 cm)
Hardiness:
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)
USDA Zone 11: above 4.5 °C (40 °F)
Sun Exposure:
Full Sun
Sun to Partial Shade
Danger:
N/A
Bloom Color:
Bright Yellow
Bloom Time:
Mid Spring
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Foliage:
Deciduous
Herbaceous
Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Flowers are good for cutting
Suitable for growing in containers
Soil pH requirements:
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
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
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