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Cosmos Seeds, Candyfloss Red
Description
(Cosmos bipinnatus). If you like your cosmos big and bold, this is your choice! Magenta blooms with a vibrant yellow eye. The compact, 2-foot plants are smothered in extra large 4-5 inch blooms; an exemplary choice for containers, landscape design, and the cutting garden.
- Annual
- 60-90 days to maturity
- 6-8 hours of full sun
- Sprouts in 7-14 days
- Seed Depth: 1/8-1/4"
- Plant Spacing: 10"
- Ideal Temperature: 70-75 F
- Frost Hardy: No
Growing Tips, Tricks and FAQs
Growing Tips
Candyfloss Red cosmos is an heirloom variety that thrives in warm weather and is perfect for cottage gardens, wildflower meadows, and pollinator-friendly landscapes. It prefers full sun and well-draining soil, tolerating dry conditions once established. Deadhead regularly to encourage continuous blooming throughout the season. Avoid excessive fertilization, as too much nitrogen results in foliage growth over flowers.
When to Grow
Cosmos should be planted after the last frost when the soil has warmed to at least 60 F. These flowers are not frost-hardy, so it is very important to check the last frost dates in your local region before planting. Blooms will start appearing 60-90 days after sowing and continue to flower until the first frost. If you’re not sure about your frost-free dates, check out our blog post, ‘Our Experts Answer Questions, Share Resources.’
How to Sow and Plant
Cosmos seeds can be directly sown into the garden after the last frost or started indoors 3-4 weeks before transplanting. Sow seeds about 1/8-1/4 inch deep, as they need light to germinate. Space the plants about 10 inches apart to make sure they have enough room to grow. Keep the soil moist but not waterlogged until germination. For the best flowering, plant in an area that receives full sun for at least 6-8 hours daily.
How to Grow
Candyfloss Red cosmos thrives in poor to average, well-draining soil and requires little maintenance. Water moderately, allowing the soil to dry between waterings, as overwatering can cause weak, leggy stems. Plants in windy areas may need staking. Deadheading spent flowers will extend the blooming season and encourage continuous flowering.
How to Save
- Cosmos are insect pollinated, and there may be some crossing between varieties in the garden. You can enjoy the mixing or use caging techniques and hand pollination to avoid crossing.
- Saving seeds from cosmos is easy: simply allow the heads to brown and dry on plants and collect seeds. Store in a cool, dry, dark place over winter.
FAQ
Can Candyfloss Red cosmos tolerate poor soil?
Yes! Cosmos thrive in poor to moderate, well-draining soil and often bloom better in less fertile conditions. Rich soil can lead to excessive foliage with fewer flowers.
How tall do Candyfloss Red cosmos plants grow?
This variety typically grows to around 2 feet tall, depending on growing conditions. If grown in rich soil or partial shade, plants may grow taller and require staking for support.
Can I grow Candyfloss Red cosmos indoors?
Cosmos can be grown indoors with the condition that they receive 6-8 hours of direct sunlight daily. Choose a large, well-draining container, and be careful not to overwater or over-fertilize.
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