Common Name: tickseed
Type: Herbaceous perennial
Family: Asteraceae
Zone: 5 to 9
Height: 1.00 to 1.50 feet
Spread: 1.50 to 2.00 feet
Bloom Time: June to August
Bloom Description: Wine red ray flowers with gold center
Sun: Full sun
Water: Dry to medium
Maintenance: Low
Flower: Showy, Good Cut
Attracts: Butterflies
Tolerate: Deer, Drought, Shallow-Rocky Soil
Culture
Easily grown in dry to medium moisture, well-drained soils in full sun. Tolerant of heat, humidity and some drought. Plants may be sheared in mid to late summer to promote a fall rebloom and to remove any sprawling or unkempt foliage. Plants may spread by rhizomes. Clumps may be divided in spring. When grown in borders or other formal garden areas, division may be needed every 2-3 years to maintain robustness.
Hardiness and longevity of hybrid coreopsis depends greatly on parentage, and ranges from hardy, fully perennial selections to half-hardy or tender perennials more often grown as annuals.
Noteworthy Characteristics
Coreopsis is a genus of between 75-80 species from North America, Mexico, Central and South America.
The genus name comes from the Greek words koris meaning "bug" and opsis meaning "like" in reference to the shape of the seed which resembles a bug or tick.
‘Red Satin’ was bred by hybridizer Darrell Probst and is the first member of the Permathread™ series. It has 1 ½ in. wide, ruby to wine red ray flowers with gold disc flowers that will keep their color and rebloom all summer if cut back. ‘Red Satin’ grows 1 to 1.5 ft. tall and 1.5 to 2 ft. wide and has dark green, thread-leaf foliage. It is hardier than other red flowered Coreopsis and since its flowers are sterile, will not self-seed. U. S. Plant Patent Applied For (PPAF).
Problems
Crown rot may occur if grown in moist, poorly drained soils. Uncommon diseases include botrytis, aster yellows, powdery mildew and fungal spots. Plant stems tend to sprawl, particularly in hot and humid climates with periodic heavy summer rainfall. Deer tend to avoid this plant.
Uses
Border fronts. Sidewalk edgings. Also effective in naturalized areas, wild gardens or cottage gardens. Good plant for areas with poor, dry soils. Patio containers.