Coreopsis, Threadleaf Coreopsis, Tickseed 'Sweet Marmalade'

Coreopsisverticillata

Family
Asteraceae (ass-ter-AY-see-ee)
Genus
Coreopsis (kor-ee-OP-sis)
Species
verticillata (ver-ti-si-LAH-tuh)
Synonym
Sun Exposure
Full Sun
Foliage
Herbaceous
Height
12-18 in. (30-45 cm)
Spacing
18-24 in. (45-60 cm)
Hardiness
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
Coral/Apricot
Pale Yellow
Bloom Time
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Mid Fall
Late Fall/Early Winter
Blooms repeatedly
Other Details
Category
Alpines and Rock Gardens
Groundcovers
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Requires consistently moist soil; do not let dry out between waterings
Foliage Color
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
Bloom Size
Other details
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
Patented
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
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored
Regional

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

Dunn, North Carolina

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Gardener's Notes:

1
positive
0
neutral
0
negative
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M
Dunn, NC (Zone 8a) | August 2014 | positive

This is one of the first threadleaf coreopsis varieties I have ever had success with. It looks delicate, but the stems are wiry and hardy...Read More

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