Seed To Bloom:
Start in pots 4-5 weeks before last spring frost. Keep at about 60-75°F.
Direct sow in spring, after last frost.
WHEN TO SET OUTSIDE
In springtime, after all danger of frost has passed.
PLACEMENT & CULTIVATION
Cosmos 'Xanthos' is a new compact selection with a bevy of blooms in primrose yellow, some single, some with extra petals. Grow in a large container or mix with pastel pink and blue flowers in the border. Pinch once when 1' tall to encourage more branching and deadhead, or cut often for bouquets for non-stop blooms. It attracts numerous beneficial insects, making it an excellent addition to the borders of vegetable gardens too!
Drought tolerant. Water regularly while establishing, then only during dry, hot spells.
Prefers acidic to neutral
Cosmos thrive in regular soil and may sprawl in nitrogen rich soils. If desired, an application of organic flower fertilizer can be mixed in around plants.
Diseases & Pests:
No major pests or diseases. Powdery mildew can be discouraged with a regular preventative application of a baking soda based spray.
When to Cut for Bouquets:
Harvest when flowers start to open to 1/2 open; best vase life before the flowers are pollinated.