-
CATEGORY ::
- All Seeds /
- All Flower Seeds /
- All Cosmos Seeds
Cosmos Sulphureus Seeds - Red
SEASON
Annual
USDA ZONES
3 - 10
HEIGHT
24 inches
BLOOM SEASON
Summer and fall
BLOOM COLOR
Red
ENVIRONMENT
Full sun
SOIL TYPE
Well-drained, pH 6.1 - 7.4
DEER RESISTANT
Yes
HOUSE PLANT
No
About...
Cosmos (Cosmos Sulphureus Red) - Easily grown from flower seed, these annuals produce masses of daisy-like flowers and graceful feathery foliage which makes them a wonderful addition to the flower bed or garden. Not only is it a pleasure to look at these glorious red Cosmos flowers, but they are also very attractive to birds and butterflies as well.
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 Red) - Easily grown from flower seed, these annuals produce masses of daisy-like flowers and graceful feathery foliage which makes them a wonderful addition to the flower bed or garden. Not only is it a pleasure to look at these glorious red Cosmos flowers, but they are also very attractive to birds and butterflies as well. This annual is also known as Klondike Cosmos, and grows best in full sun, moderately fertile soil and moderate amounts of water, but will survive with very little water as they are quite resistant to drought.
The Sulfur Cosmos flower is 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 petals just beginning to unfold. The bloom will fully open once in the vase. Remove the leaves below the water line, and enjoy a beautiful bouquet!
Directly sow Cosmos seeds into prepared soil after danger of frost has passed. The flower seeds can be scattered and lightly raked under at a depth of 1/16 inch. Keep the flower seeds moist until germination, and blooms will appear in about 10 weeks.
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.
Videos