Exposure Full-sun
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C. sulphureus. The intense dazzling yellow to reddish orange single flowers on this striking species Cosmos attracts bumblebees, birds, and beneficial insects, and looks terrific in a cut flower bouquet. Plant Bright Lights cosmos seeds in full sun. It's easy to grow in a variety of soils - tend towards the dry side. Its natural drought tolerance makes it a good candidate for xeriscaping. Plants grow to about 1m (3') tall, for the middle or front of a mixed border. Mix Bright Lights with dark blue and purple flowers like Blue Boy Centaurea or Rocket Larkspur Delphiniums for eye-catching contrast.
Annual
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Latin
Latin
Cosmos bipinnatus & C. sulfureus
Family: Asteraceae
Difficulty
Difficulty
Very easy
Season & Zone
Season & Zone
Exposure: Full sun
Timing
Timing
Direct sow after the last frost date. Several sowings will result in a very long bloom period. Cosmos can also be started indoors in late winter for transplanting after last frost, once daytime temperatures are above 10°C (50°F). Seeds will sprout in 3-10 days. Optimal temperature for germination: 21-25°C (70-75°F).
Starting
Starting
Sow seeds very shallowly only a few millimetres (1/8″) deep. Thin or transplant to 20-25cm (8-10″) apart.
Growing
Growing
Most varieties can get quite tall, and in exposed or windy gardens can benefit from staking or trellis netting laid horizontally over the bed for the stems to grow through before blooming. Deadhead and cut for bouquets regularly to extend the bloom period.
West Coast Seeds is a family-owned company that embraces an organic lifestyle. A group of imagination catalysts and passionate educators, dedicated to producing products and services that better the environment. As part of our mission to repair the earth, we aim to inspire and empower people to take responsibility for the state of the planet. For us, organic is about much more than saying no to chemicals, it is about saying yes to building a healthy soil for the future.
For over 35 years, we have upheld our strong reputation as a leading seed supplier, seeking out the highest quality untreated seeds for organic growing and putting them through rigorous independent testing. We built our company on the exchange of generational wisdom in a masterclass community of newbies and masters alike. Our world may have changed, but our commitment to our people, our customers, and our planet has not.
We’re a values-based business that has blossomed into a lifestyle ethos, with products that support seeders, feeders, keepers, and the tiniest of creepers. Our mission? To mobilize the next generation of gardeners with products that nourish soil and grow vigorous, sustainable gardens. We believe all plants should be grown without the use of chemicals, and that the seeds we supply are an important component of regenerative gardening.
We don’t just offer seeds, we offer experience, insight, and understanding. From timeless garden wisdom to new tech know-how, this is learning on the job: knowledge gleaned not from the pages of a book but from burying our fingers in the soil. We test, experiment, observe and adapt, never happier than when we get to share what we’ve learned with others.
Gardens don’t just grow seeds. They grow minds and imaginations, people and communities. Our vision encompasses both the micro and the macro. We eat locally, protect pollinators, teach people to grow from seed, and support regional biodiversity. We think big but act small and deliver unexpected impact — always with community and purpose.
At West Coast Seeds we believe in the power of small and that little can be large. Like the tiniest seed germinates to evoke incremental change with massive potential, so to can our community of gardeners and growers together. Gardeners are the earth’s stewards, planting seeds of creative declaration. The soil provides the canvas, we provide the seeds.
Direct sow after the last frost date. Several sowings will result in a very long bloom period. Cosmos can also be started indoors in late winter for transplanting after last frost, once daytime temperatures are above 10°C (50°F). Seeds will sprout in 3-10 days. Optimal temperature for germination: 21-25°C (70-75°F).
Sow seeds very shallowly only a few millimetres (1/8″) deep. Thin or transplant to 20-25cm (8-10″) apart.
Most varieties can get quite tall, and in exposed or windy gardens can benefit from staking or trellis netting laid horizontally over the bed for the stems to grow through before blooming. Deadhead and cut for bouquets regularly to extend the bloom period.
