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Wasowski, Sally and Andy
Coreopsis verticillata L.
Threadleaf coreopsis, Whorled tickseed, Whorled coreopsis
USDA Symbol: COVE5
USDA Native Status: L48 (N), CAN (I)
Threadleaf coreopsis is a popular, 1-2 ft. perennial with delicate, dark-green leaves divided into thread-like segments. The long-blooming flower heads have yellow centers and untoothed petals.
This plant spreads by rhizomes.
Plant CharacteristicsDuration: Perennial Habit: Herb Inflorescence: Head Fruit:
Black Size Class:
Bloom InformationBloom Color: Yellow
Bloom Time: Jun , Jul
, WV Canada: ON
, QC Native Distribution: MD
e. to KY
& TN Native Habitat:
Wood edges, pine savannahs, Post Oak savannahs
Growing ConditionsWater Use: Low
Light Requirement: Sun , Part Shade
Soil Moisture: Dry
Soil pH: Acidic (pH<6.8)
Drought Tolerance: High
Soil Description: Sandy, well-drained soil.
A popular garden flower
since the 19th century. Use Wildlife:
Seeds eaten by birds. Conspicuous Flowers:
Birds , Butterflies Nectar Source:
Root Division , Seeds Description:
Propagate by dividing either in the fall or early spring. Seeds may be sown outside in late fall or the following spring without any cold treatment. Seedlings grow rapidly. Seed Collection:
Nutlets are mature and ready for collection about four weeks after the flowers wither. Watch the inner series of bracts; when they begin to darken, it is time to collect. Remove chaff and store in sealed, refrigerated containers. Storage life is at least three years. Seed Treatment:
Seeds of this genus
generally germinate without pretreatment. Commercially Avail:
This plant spreads by rhizomes but can be controlled by lifting and dividing every 3-4 years. This also increases the vigor of the plant.
Record Last Modified: 2013-09-11
Research By: TWC Staff