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Tall Yellow Sulphur Cosmos Seeds

Cosmos sulphureus

5.00 (2 reviews)
  • HOW TO GROW
  • FAST FACTS
  • REVIEWS

HOW TO GROW

Sowing: In early spring or after the last frost, scatter Tall Yellow Sulphur Cosmos flower seeds on the surface of loose soil. Keep the soil lightly moist until germination, which should take place within 10-20 days at soil temperatures from 65-75 degrees F. Cooler soil temperatures may delay germination. Seedlings do not need to be thinned, but can be transplanted if they appear too crowded. Since these seeds germinate quickly in warm soil, they can be sown at any time before midsummer for another crop of flowers. To start the seed indoors, sow on the surface of a flat 6-8 weeks before the last frost of spring; keep the soil evenly moist and at a temperature of 70-75 degrees F until germination. When there is no chance of frost, transplant them outdoors.

Growing: As soon as seedlings appear, only water them in very dry weather. This flower must not be over-watered, and thrives in drought conditions and heat; if prolonged drought occurs, give the plants one deep watering. If blooming begins to decrease, cut the plant back to 12" for new growth; more blossoms will come in about 4 weeks. If allowed to self-seed, this flower will produce a new crop of flowers next year. This flower attracts birds, butterflies, and bees.

Harvesting: Cosmos blossoms make lovely, long lasting cut flowers. Cut long stems of blossoms that have just opened, and remove any foliage that will fall below the water level. These flowers usually have a vase life of 7-10 days. Cosmos blossoms also make attractive dried flowers.

Seed Saving: Allow the flowers to drop their petals and develop into spiky seed heads. When ripe, the heads will be brown or dark brown and easily broken apart to reveal the narrow, sharp Tall Yellow Sulphur Cosmos flower seeds. Remove the ripe seed heads and spread them out to dry away from direct sunlight. When they have completely dried, break apart the heads to separate the seeds from the husk. Store the cleaned Tall Yellow Sulphur Cosmos flower seeds in a cool, dry place.

FAST FACTS

Latin Name: Cosmos sulphureus

Species Origin: Mexico

Type: Garden Flowers

Life Cycle: Annual

USDA Zones: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12

US Regions: California, Mountain, Arid/Desert, Plains/Texas, Midwest, Northern, Northeast, Southeast

Seeds per Ounce: 4,000

Stratification: No Stratification

Germination Ease: No Stratification

Sunlight: Full Sun

Height: 40 Inches

Color: Yellow

Bloom Season: Blooms Early Summer, Blooms Late Summer, Blooms Early Fall

Uses: Cut Flowers

Tall Yellow Sulphur Cosmos Seeds 5.0
Review By Cosmos and Larkspur Fan

Quick Germination!

This was my first order from Everwilde Farms and I wasn't prepared for the pretty packaging. The seeds germinated so quickly! I purchased Tall Yellow Sulphur Cosmos, Imperial Rocket Larkspur Seed Mix, and Rocket Larkspur. Looking forward to them being all grown up and having many affectionate and buzzing visitors.

Tall Yellow Sulphur Cosmos Seeds 5.0
Review By Sandy Bean

Easy to grow and they draw butterflies and bees!

Super easy to grow with many blooms!

Size Price Quantity
XL Mylar Packet (~500 Seeds) $3.48 -+
1 Oz Mylar (~4,000 Seeds) $7.09 -+
1/4 Lb Mylar (113g) $12.12 -+
1 Lb Mylar (454g) $30.00 -+
5 Lb Bulk Bag (2.27kg) $135.00 -+
10 Lb Bulk Bag (4.54kg) $240.00 -+
25 Lb Bulk Bag (11.3kg) $570.00 -+
50 Lb Bulk Bag (22.7kg) $1,080.00 -+
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DESCRIPTION

Taller than most Cosmos varieties, these yellow flowers are sure to stand out in a crowd. These annuals are very easy to grow and will fill in the upper story of your garden, where butterflies are at ease.
Because of their Mexican heritage, these bright annuals meet high heat and drought conditions with native beauty and vigor. Spanish conquistadors searching for gold discovered these flowers on their journeys through Mexico. Mission gardens often included these flowers, which priests gave the name "cosmos," the Greek word for a harmonious whole, because of their neatly spaced petals. Cosmos flowers made their way to England with Spanish ambassadors in the late 18th century, and to the United States in the following century.

HOW TO GROW

Sowing: In early spring or after the last frost, scatter Tall Yellow Sulphur Cosmos flower seeds on the surface of loose soil. Keep the soil lightly moist until germination, which should take place within 10-20 days at soil temperatures from 65-75 degrees F. Cooler soil temperatures may delay germination. Seedlings do not need to be thinned, but can be transplanted if they appear too crowded. Since these seeds germinate quickly in warm soil, they can be sown at any time before midsummer for another crop of flowers. To start the seed indoors, sow on the surface of a flat 6-8 weeks before the last frost of spring; keep the soil evenly moist and at a temperature of 70-75 degrees F until germination. When there is no chance of frost, transplant them outdoors.

Growing: As soon as seedlings appear, only water them in very dry weather. This flower must not be over-watered, and thrives in drought conditions and heat; if prolonged drought occurs, give the plants one deep watering. If blooming begins to decrease, cut the plant back to 12" for new growth; more blossoms will come in about 4 weeks. If allowed to self-seed, this flower will produce a new crop of flowers next year. This flower attracts birds, butterflies, and bees.

Harvesting: Cosmos blossoms make lovely, long lasting cut flowers. Cut long stems of blossoms that have just opened, and remove any foliage that will fall below the water level. These flowers usually have a vase life of 7-10 days. Cosmos blossoms also make attractive dried flowers.

Seed Saving: Allow the flowers to drop their petals and develop into spiky seed heads. When ripe, the heads will be brown or dark brown and easily broken apart to reveal the narrow, sharp Tall Yellow Sulphur Cosmos flower seeds. Remove the ripe seed heads and spread them out to dry away from direct sunlight. When they have completely dried, break apart the heads to separate the seeds from the husk. Store the cleaned Tall Yellow Sulphur Cosmos flower seeds in a cool, dry place.

FAST FACTS

Latin Name: Cosmos sulphureus

Species Origin: Mexico

Type: Garden Flowers

Life Cycle: Annual

USDA Zones: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12

US Regions: California, Mountain, Arid/Desert, Plains/Texas, Midwest, Northern, Northeast, Southeast

Seeds per Ounce: 4,000

Stratification: No Stratification

Germination Ease: No Stratification

Sunlight: Full Sun

Height: 40 Inches

Color: Yellow

Bloom Season: Blooms Early Summer, Blooms Late Summer, Blooms Early Fall

Uses: Cut Flowers

Reviews

5.00
Global Rating: 5.00 from 2 reviews
5.0

Review By Cosmos and Larkspur Fan

Quick Germination!

This was my first order from Everwilde Farms and I wasn't prepared for the pretty packaging. The seeds germinated so quickly! I purchased Tall Yellow Sulphur Cosmos, Imperial Rocket Larkspur Seed Mix, and Rocket Larkspur. Looking forward to them being all grown up and having many affectionate and buzzing visitors.

5.0

Review By Sandy Bean

Easy to grow and they draw butterflies and bees!

Super easy to grow with many blooms!

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