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Cosmos Sulphureus Seeds - Orange
SEASON
Annual
USDA ZONES
3 - 10
HEIGHT
24 inches
BLOOM SEASON
Summer and fall
BLOOM COLOR
Orange
ENVIRONMENT
Full sun
SOIL TYPE
Well-drained, pH 6.1 - 7.4
DEER RESISTANT
Yes
HOUSE PLANT
No
About...
Cosmos (Cosmos Sulphureus Orange) - Drawing butterflies and compliments alike, these brilliant orange Sulphur Cosmos add a splash of color in any setting. Easy-to-grow flower seed will produce blooms in only 10 weeks!
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 Orange) - Drawing butterflies and compliments alike, these brilliant orange Sulphur Cosmos add a splash of color in any setting. Easy-to-grow flower seed will produce blooms in only 10 weeks! This variety stands out in the border and produces an abundance of 2 inch semi-double and double orange blooms all summer long. A sunny location and little water is all the plants need to perform well. Don't even apply fertilizer as it tends to produce unusually tall, lanky plants with few blooms. These flowers are commonly called Klondike Cosmos.
Sulfur Cosmos are known as an excellent cut flower 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!
Directly sow Klondike Cosmos seeds into prepared soil after danger of frost has passed. Lightly rake the soil over the flower seeds at a depth of 1/16 inch. Keep the area moist until germination. The plants perform well even when crowded.
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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