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Cosmos Sulphureus Seeds - Gold
SEASON
Annual
USDA ZONES
3 - 10
HEIGHT
24 inches
BLOOM SEASON
Summer and fall
BLOOM COLOR
Golden
ENVIRONMENT
Full sun
SOIL TYPE
Well-drained, pH 6.1 - 7.4
DEER RESISTANT
Yes
HOUSE PLANT
No
About...
Cosmos (Cosmos Sulphureus Gold) - What a dazzling display for your garden grown from flower seeds! Treat yourself to a mass planting of these golden-yellow colored Sulfur Cosmos and attract butterflies and other beneficial insects to your flower garden.
MORE COSMOS OPTIONS
Planting Directions
TEMPERATURE
70 - 85F
AVERAGE GERM TIME
14 - 21 days
LIGHT REQUIRED
Yes
DEPTH
1/16 inch
SOWING RATE
6 seeds per plant
MOISTURE
Keep seeds moist until germination
PLANT SPACING
12 - 18 inches
Cosmos (Cosmos Sulphureus Gold) - What a dazzling display for your garden grown from flower seeds! Treat yourself to a mass planting of these golden colored annuals and attract butterflies and other beneficial insects to your flower garden. Wonderfully easy to grow from Cosmos seeds, this species produce smaller and bushier plants than their pink cousins. These plants produce masses of 2 inch golden-yellow semi-double and double flowers. The display is long-lasting, right up until the first frost. They are a vigorous performer with so little effort! Some gardeners use the common name of Klondike Cosmos.
The Klondike Cosmos flower is known to be excellent for cutting with a vase life of 7 - 10 days. Cut the blooms in the early morning hours, and select stems with flowers that have just opened. Remove the leaves below the water line, and enjoy a beautiful bouquet!
How to grow Sulfur Cosmos from flower seed: Directly sow the seeds into prepared soil after danger of frost has passed. The seeds can be scattered onto the soil and lightly raked under at a depth of 1/16 inch. Blooms appear in about 10 weeks after sowing the flower seed. Once established, these plants are quite resistant to drought.
Common Questions
Why haven’t my plants bloomed?
Over fertilizing will give you beautiful plants but no flowers.
Can I start inside?
Cosmos is very easy to start outside and does not need to be started inside, however you can start them inside 6-8 weeks before the last frost.
Can I use cosmos as a cut flower?
Yes, the best time to pick them is right after the flower opens. Foliage can also be used as greens in an arrangement.
Does cosmos attract beneficial insects to my garden?
Yes, it attracts pollinators such as bees and butterflies, as well as other beneficial insects.
Where should I put in my flower bed?
Due to their height place them in the back of the flower bed. It can also be used as a temporary screen to cover up unsightly elements. Shorter varieties can be used in mixed borders and containers as well.
How can you keep cosmos flowers coming back every year?
Cosmos are annual plants that perish with the first frost, yet they can self-seed for the next growing season. After the flowering season ends in autumn, allow the flower heads to remain on the plants for seed dispersal and self-sowing. These seeds will remain inactive during winter and sprout in spring when temperatures hit 75 degrees Fahrenheit.
How long can cosmos live?
Cosmos is an annual plant that lives one growing season After flowering, the Cosmos plant will gradually weaken and eventually die back.
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