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Coreopsis Seeds, Yellow Fully Double
Description
(Coreopsis grandiflora). This dwarf, double-petaled tickseed coreopsis is a pretty little pollinator magnet. An early bloomer, it is everything we love about native wildflowers! The plants reach 12 to 14 inches tall and are well adapted to a range of soils and conditions. It is beautifully suited to everything from meadows and wildflower stands to tidy beds, borders, and container gardens.Â
- Perennial in zones 4-9
- 60-90 days to maturity
- 8-12 hours of full to partial sun
- Sprouts in 10-21 days
- Seed Depth: Surface Sow
- Plant Spacing: 10"
- Ideal Temperature: 50-75 F
- Frost Hardy: Yes
Growing Tips, Tricks and FAQs
Growing Tips
Yellow Fully Double coreopsis is a heat and drought-tolerant heirloom variety. It attracts bees, butterflies, and other beneficial insects, and thrives with minimal care, making it an excellent choice for gardeners of all skill levels. There is no need to fertilize these plants, as this can even reduce blooms.
When to Grow
Plant Yellow Fully Doublecoreopis after the danger of frost has passed. Start seeds indoors 6-8 weeks before the last frost date for an early start, or sow seeds directly outdoors in late spring when the soil has warmed. Check your local area’s frost dates to determine the best planting time in your region. Learn more about it by checking out our blog post, ‘Our Experts Answer Questions, Share Resources.’ This variety grows best in warm weather and will bloom from summer through early fall.
How to Sow and Plant
Sow Yellow Fully Double coreopsis seeds on the surface of the soil, as they need light to germinate. Indoors, use a seed-starting mix and press the seeds lightly onto the soil without covering them. Keep the soil moist and maintain a temperature of around 70 F. Germination typically takes 10-21 days. For outdoor planting, prepare a sunny, well-drained garden bed, scatter the seeds evenly, and lightly press them into the soil surface. Once seedlings are established, harden them off and space them 10 inches apart to allow for proper growth and airflow.
How to Grow
Yellow Fully Double coreopsis thrives in full sun, requiring at least 8-12 hours of direct sunlight daily. It prefers well-draining soil and can also tolerate poor soil conditions as long as water does not pool. Once established, this drought-tolerant variety requires minimal watering and grows well in hot, dry conditions. Deadhead spent flowers to encourage continuous blooming and cut back burned-out plants by one-third after the first bloom cycle for additional flowers later in the season. Fertilizer is generally unnecessary, as over-fertilizing may reduce blooming.
How to Save
- Coreopsis 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 seed from coreopsis 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
Will Yellow Fully Double coreopsis self-seed in my garden?
Yes, this plant is a prolific self-seeder. Allow some flowers to go to seed, and you may see new plants emerge the following year.
How long will Yellow Fully Double coreopsis bloom during the season?
This variety will bloom continuously from mid-summer through early fall, especially if deadheaded regularly.
Can Yellow Fully Double coreopsis be grown in containers?
Yes, it is well-suited for container gardening. Make sure that the container has good drainage and place it in a sunny spot for best results.
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