Cosmos

Description

Cosmos is a genus of flowering plants in the Asteraceae family, native to North and South America. They are known for their daisy-like flowers with brightly colored petals that range from pink, red, orange, and white. The flowers bloom from summer to fall and attract bees, butterflies, and other pollinators.

Taxonomic Information

Appearance

Cosmos plants can grow up to 6 feet tall with a spread of 3 feet. They have fern-like leaves that are pinnately divided and can be up to 6 inches long. The flowers are borne singly or in loose clusters and have a diameter of 2-4 inches. The petals are narrow and strap-shaped, and the center of the flower is composed of a disk of small florets.

Care Guide

Cosmos plants are easy to grow and care for. Here are some tips:

• Water: Cosmos plants prefer well-drained soil and should be watered regularly, especially during dry spells.
• Fertilization: A balanced fertilizer can be applied once a month during the growing season.
• Soil: Cosmos plants prefer soil that is rich in organic matter and well-drained.
• Sunlight: Cosmos plants require full sun to grow and bloom best.
• Hardiness Zones: Cosmos plants are hardy in zones 2-11.

Common Pests & Diseases

Cosmos plants are generally resistant to pests and diseases. However, they can be affected by aphids, spider mites, and thrips. Powdery mildew can also be a problem in humid conditions. To prevent these issues, make sure to provide good air circulation and avoid overcrowding.

Habitat

Cosmos plants are native to North and South America and can be found in a variety of habitats, including prairies, meadows, and open woodlands. They are also a popular garden plant and can be grown in borders, containers, and wildflower gardens.

Question and Answer

Q: Are Cosmos plants annual or perennial?
A: Cosmos plants can be annual or perennial depending on the species and growing conditions.

Q: Can Cosmos plants tolerate drought?
A: Cosmos plants are fairly drought tolerant but prefer regular watering.

Q: How do you deadhead Cosmos flowers?
A: To deadhead Cosmos flowers, simply pinch or cut off the spent blooms at the base of the stem.

Q: Can Cosmos plants be grown from seed?
A: Yes, Cosmos plants are easy to grow from seed and can be sown directly in the garden after the danger of frost has passed.

Related Plants

• Aster
• Black-eyed Susan
• Coreopsis
• Daisy
• Marigold
• Phlox
• Zinnia

References

• “Cosmos bipinnatus.” Missouri Botanical Garden. Accessed October 12, 2021. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=b215.
• “Cosmos.” Royal Horticultural Society. Accessed October 12, 2021. https://www.rhs.org.uk/plants/26630/cosmos/details.
• “Cosmos.” University of Florida IFAS Extension. Accessed October 12, 2021. https://gardeningsolutions.ifas.ufl.edu/plants/ornamentals/cosmos.html.