(Cosmos bipinnatus 'Sea Shells') KOZ-mose by-pin-AY-tus Genus:  Cosmos This unique annual produces quilled blossoms of hollow, tube-shaped petals that radiate from the center in shades of white, pink, or carmine red. The flowers, which bloom all summer long, sometimes have bicolored interior and exterior tubes.  Noteworthy Characteristics:  This Mexican native is loved by butterflies. It produces excellent cut flowers and is ideal for a cutting garden, mixed border, or annual border.  Care:  Deadhead to prolong flowering, and also leave some seeds to self-sow. The plants are moderately drought and heat tolerant. Propagation:  Sow seed in situ in late spring or at 61°F in mid-spring. Problems:  Stem canker, powdery mildew, Rhizoctonia stem rot, gray mold, aphids.

Overview

Height 3 ft. to 6 ft. Spread 6 in. to 12 in. Growth Habit Clumps Growth Pace Fast Grower Light Full Sun Only Moisture Dry to Medium Maintenance Moderate Characteristics Attracts Butterflies, Self Seeds, Showy Flowers Bloom Time Early Fall, Early Summer, Fall, Late Summer, Summer Flower Color Pink, Red, White Uses Beds and Borders, Cut Flower Style Cottage Garden Seasonal Interest Summer Interest Tolerance Drought Tolerant Type Annuals