Sea Shells Mix is a cultivar of Cosmos bipinnatus, which is an annual flowering plant native to Mexico. This variety offers an upright habit of 36-48" tall and 16-18" wide, with white, light pink, and dark pink flowers with fluted petals and yellow centers. Blooms are 3" in diameter atop fernlike foliage, lasting from mid-summer until frost. This plant attracts pollinators and is drought-tolerant. Airy and tall, Sea Shells Mix is ideal for cottage gardens, mixed borders, or creating a fast-growing annual hedge. This plant excels in bouquets and is an obvious addition to cutting gardens. Cosmos requires minimal care during the growing season, flourishing in full or partial shade with moderate water. For a Cosmos variety better suited to border fronts, try growing Limara Lemon and Mandarin.
Sea Shells Mix Selling Tips
Sell Sea Shells Mix to customers looking for an attractive flower for a border, mass planting, wildlife, or cutting garden. Customers love this plant's ferny foliage and unique blooms. This plant requires little more than moderate water to excel in full or partial shade, bringing pollinators and vibrant color to the landscape. Cut flowers throughout the season to create beautiful bouquets and encourage plants to continue producing. This tall variety makes an ideal background for cottage borders. Create a soft, cheerful, idyllic landscape by growing Cosmos alongside Zinnias, Marigolds, Rudbeckia, Salvia, and Cleome.
Coach Your Customer
1. Space plants 8-10" apart in well-drained soil in a shady or partly shady location.
2. Water once per week or more often in drought. Apply an organic mulch (like shredded leaves) to retain moisture and provide nutrients for the soil.
3. Deadhead blooms to encourage continuous blooming right up to the first frost. Alternatively, cut flowers for bouquets.
4. This variety is an annual. Remove all plant debris after the first frost to prevent disease the following year.
General Growing Tips For Your Seedling Tray
For best results with Sea Shells Mix, plant one seedling plug per 4-inch or four per 10-inch container. Use a well-drained soil in full or partial sun with light feed (150-200 ppm N), a pH of 6.0-7.0, and an EC of 1.5-2.5 mS/cm. Provide temperatures of 70-80 daytime and 60-70 nighttime. Don't pinch, but use daminozide or chlormequat as needed. Watch for aphids, whiteflies, spider mites, thrips, fusarium wilt, and powdery mildew.
Flowering
Dark pink, light pink, and white flowers with fluted petals and yellow centers bloom from mid-summer until frost.
Pinching
This plant doesn't require pinching.
Spacing
Space containers for adequate airflow and sunlight penetration around the base and foliage of each plant. We recommend spacing 4-inch, gallon, or 10-inch containers 12-18" on center for good ventilation and disease prevention. Adjust spacing in your commercial greenhouse as needed for your plants.
Height Control
Once the plant establishes roots, you may apply daminozide or chlormequat chloride as needed to control height. Drought stress and negative DIF are also effective height control methods.
Pests
Watch for aphids, whiteflies, spider mites, and thrips as part of your Integrated Pest Management plan.
Aphids are small, soft-bodied insects that cause damage by sucking sap from plant tissue. They reproduce quickly and are particularly attracted to young growth. Curling and yellowed leaves, stunted growth, and stickiness on leaves are signs of an infestation. These insects also spread diseases and reproduce rapidly. Use biological controls or horticultural oils to discourage and kill aphids.
Whiteflies are small, winged insects that eat plant sap and cause yellowed leaves and stunted growth. Severe infestations can lead to plants dying. Prevent infestations by sanitizing surfaces and tools and removing debris. Introduce natural predators and use sticky traps to control populations. Insecticidal soaps and oils are also effective against this pest.
Spider Mites are tiny pests that cause stippling, yellowing, and webbing on foliage by feeding on plant sap. They flourish in warm, dry environments. Use correct water and fertilizing practices; over-fertilizing can attract spider mites. Proper humidity levels, predatory mites or ladybugs, and insecticidal soaps or oils may prevent or address a spider mite infestation.
Thrips are tiny insects that eat plant tissue and can transmit viruses. Watch for silvery-white streaks or black spots on foliage and distorted growth. Use natural predators (like predatory mites), insecticidal soap, neem oil, and sticky traps to control infestations and prevent spread.
Disease
Watch for signs of fusarium wilt and powdery mildew. Take basic preventative measures in your greenhouse as part of Integrated Pest Management, including watering at the base of each plant, allowing the soil to dry between waterings, using proper fertilizer and light, maintaining a clean and debris-free environment, and sanitizing equipment. Provide adequate spacing and good airflow for seedling plugs.
Fusarium Wilt is a fungal disease that causes leaves to wilt and turn yellow. Use clean growing media and sterilize pots, trays, and tools before transplanting seedling plugs. Inspect plants regularly for signs of disease, checking roots and stems for discoloration and wilting. Remove and destroy infected plants to prevent the spread of fusarium fungus.
Powdery Mildew is a fungal disease that thrives in humid conditions, appearing as a white or gray coating on foliage and flowers. Provide good airflow in your greenhouse. We recommend horizontal airflow fans to help control humidity levels alongside a dehumidifier or manual venting. Remove and destroy infected plants and apply fungicides as needed or preventatively. Look for the active ingredients myclobutanil, trifloxystrobin, or potassium bicarbonate to combat Powdery Mildew threatening your seedling plugs.
Planting Sea Shells Mix Liners
We recommend planting one seedling plug per 4-inch or four per 10-inch container. Use well-drained soil and completely bury the ellepots centered or evenly spaced in the container.
Rooted Cuttings
Cuttings vary in size between different plant families. These rooted starter plants will arrive ready to be transplanted in to your final container. If they are to be used in a landscape application, you will need to establish them in a 4 inch pot or an 1801 before planting outside.
Cosmos Sea Shells Mix Quick Reference Guide
4 Inch crop time
4-6 Weeks
10 Inch crop time
8-12 Weeks
Bloom Period
Fall, Summer
Color
Pink, White
Habit
Upright
Height
36-48 Inches
Light
Full Shade, Partial Shade
Minimum Temp
60
Water Needs
Moderate
Patented Plant
No
Current Availability
Current Availability
11-04-2024 (Week 45)
0
11-11-2024 (Week 46)
0
11-18-2024 (Week 47)
0
11-25-2024 (Week 48)
0
12-02-2024 (Week 49)
4,000
12-09-2024 (Week 50)
4,000
12-16-2024 (Week 51)
4,000
12-23-2024 (Week 52)
4,000
12-30-2024 (Week 01)
4,000
01-06-2025 (Week 02)
4,000
01-13-2025 (Week 03)
3,750
01-20-2025 (Week 04)
4,000
01-27-2025 (Week 05)
4,000
02-03-2025 (Week 06)
4,000
02-10-2025 (Week 07)
4,000
02-17-2025 (Week 08)
4,000
02-24-2025 (Week 09)
4,000
03-03-2025 (Week 10)
3,750
03-10-2025 (Week 11)
4,000
03-17-2025 (Week 12)
4,000
03-24-2025 (Week 13)
4,000
03-31-2025 (Week 14)
4,000
04-07-2025 (Week 15)
4,000
04-14-2025 (Week 16)
4,000
04-21-2025 (Week 17)
4,000
04-28-2025 (Week 18)
4,000
05-05-2025 (Week 19)
4,000
05-12-2025 (Week 20)
4,000
05-19-2025 (Week 21)
4,000
05-26-2025 (Week 22)
4,000
06-02-2025 (Week 23)
4,000
06-09-2025 (Week 24)
4,000
06-16-2025 (Week 25)
4,000
06-23-2025 (Week 26)
4,000
06-30-2025 (Week 27)
4,000
07-07-2025 (Week 28)
4,000
07-14-2025 (Week 29)
0
07-21-2025 (Week 30)
0
07-28-2025 (Week 31)
0
08-04-2025 (Week 32)
0
Sea Shells Mix is a cultivar of Cosmos bipinnatus, which is an annual flowering plant native to Mexico. This variety offers an upright habit of 36-48" tall and 16-18" wide, with white, light pink, and dark pink flowers with fluted petals and yellow centers. Blooms are 3" in diameter atop fernlike foliage, lasting from mid-summer until frost. This plant attracts pollinators and is drought-tolerant. Airy and tall, Sea Shells Mix is ideal for cottage gardens, mixed borders, or creating a fast-growing annual hedge. This plant excels in bouquets and is an obvious addition to cutting gardens. Cosmos requires minimal care during the growing season, flourishing in full or partial shade with moderate water. For a Cosmos variety better suited to border fronts, try growing Limara Lemon and Mandarin.
Sea Shells Mix Selling Tips
Sell Sea Shells Mix to customers looking for an attractive flower for a border, mass planting, wildlife, or cutting garden. Customers love this plant's ferny foliage and unique blooms. This plant requires little more than moderate water to excel in full or partial shade, bringing pollinators and vibrant color to the landscape. Cut flowers throughout the season to create beautiful bouquets and encourage plants to continue producing. This tall variety makes an ideal background for cottage borders. Create a soft, cheerful, idyllic landscape by growing Cosmos alongside Zinnias, Marigolds, Rudbeckia, Salvia, and Cleome.
Coach Your Customer
1. Space plants 8-10" apart in well-drained soil in a shady or partly shady location.
2. Water once per week or more often in drought. Apply an organic mulch (like shredded leaves) to retain moisture and provide nutrients for the soil.
3. Deadhead blooms to encourage continuous blooming right up to the first frost. Alternatively, cut flowers for bouquets.
4. This variety is an annual. Remove all plant debris after the first frost to prevent disease the following year.
General Growing Tips For Your Seedling Tray
For best results with Sea Shells Mix, plant one seedling plug per 4-inch or four per 10-inch container. Use a well-drained soil in full or partial sun with light feed (150-200 ppm N), a pH of 6.0-7.0, and an EC of 1.5-2.5 mS/cm. Provide temperatures of 70-80 daytime and 60-70 nighttime. Don't pinch, but use daminozide or chlormequat as needed. Watch for aphids, whiteflies, spider mites, thrips, fusarium wilt, and powdery mildew.
Flowering
Dark pink, light pink, and white flowers with fluted petals and yellow centers bloom from mid-summer until frost.
Pinching
This plant doesn't require pinching.
Spacing
Space containers for adequate airflow and sunlight penetration around the base and foliage of each plant. We recommend spacing 4-inch, gallon, or 10-inch containers 12-18" on center for good ventilation and disease prevention. Adjust spacing in your commercial greenhouse as needed for your plants.
Height Control
Once the plant establishes roots, you may apply daminozide or chlormequat chloride as needed to control height. Drought stress and negative DIF are also effective height control methods.
Pests
Watch for aphids, whiteflies, spider mites, and thrips as part of your Integrated Pest Management plan.
Aphids are small, soft-bodied insects that cause damage by sucking sap from plant tissue. They reproduce quickly and are particularly attracted to young growth. Curling and yellowed leaves, stunted growth, and stickiness on leaves are signs of an infestation. These insects also spread diseases and reproduce rapidly. Use biological controls or horticultural oils to discourage and kill aphids.
Whiteflies are small, winged insects that eat plant sap and cause yellowed leaves and stunted growth. Severe infestations can lead to plants dying. Prevent infestations by sanitizing surfaces and tools and removing debris. Introduce natural predators and use sticky traps to control populations. Insecticidal soaps and oils are also effective against this pest.
Spider Mites are tiny pests that cause stippling, yellowing, and webbing on foliage by feeding on plant sap. They flourish in warm, dry environments. Use correct water and fertilizing practices; over-fertilizing can attract spider mites. Proper humidity levels, predatory mites or ladybugs, and insecticidal soaps or oils may prevent or address a spider mite infestation.
Thrips are tiny insects that eat plant tissue and can transmit viruses. Watch for silvery-white streaks or black spots on foliage and distorted growth. Use natural predators (like predatory mites), insecticidal soap, neem oil, and sticky traps to control infestations and prevent spread.
Disease
Watch for signs of fusarium wilt and powdery mildew. Take basic preventative measures in your greenhouse as part of Integrated Pest Management, including watering at the base of each plant, allowing the soil to dry between waterings, using proper fertilizer and light, maintaining a clean and debris-free environment, and sanitizing equipment. Provide adequate spacing and good airflow for seedling plugs.
Fusarium Wilt is a fungal disease that causes leaves to wilt and turn yellow. Use clean growing media and sterilize pots, trays, and tools before transplanting seedling plugs. Inspect plants regularly for signs of disease, checking roots and stems for discoloration and wilting. Remove and destroy infected plants to prevent the spread of fusarium fungus.
Powdery Mildew is a fungal disease that thrives in humid conditions, appearing as a white or gray coating on foliage and flowers. Provide good airflow in your greenhouse. We recommend horizontal airflow fans to help control humidity levels alongside a dehumidifier or manual venting. Remove and destroy infected plants and apply fungicides as needed or preventatively. Look for the active ingredients myclobutanil, trifloxystrobin, or potassium bicarbonate to combat Powdery Mildew threatening your seedling plugs.
Planting Sea Shells Mix Liners
We recommend planting one seedling plug per 4-inch or four per 10-inch container. Use well-drained soil and completely bury the ellepots centered or evenly spaced in the container.
Rooted Cuttings
Cuttings vary in size between different plant families. These rooted starter plants will arrive ready to be transplanted in to your final container. If they are to be used in a landscape application, you will need to establish them in a 4 inch pot or an 1801 before planting outside.
Cosmos Sea Shells Mix Quick Reference Guide
4 Inch crop time
4-6 Weeks
10 Inch crop time
8-12 Weeks
Bloom Period
Fall, Summer
Color
Pink, White
Habit
Upright
Height
36-48 Inches
Light
Full Shade, Partial Shade
Minimum Temp
60
Water Needs
Moderate
Patented Plant
No
Edit Product
Edit description
Something went wrong! Please try again!
Edit Quick Reference Guide
Catalog Request Form
Email Discounts and Coupons Form
Before we take this relationship any further...
It looks like this is the first time you've added anything to your cart.
We just wanted to remind you that we are a wholesale starter plant company that sells to businesses, schools, clubs, and other non-profits. State law dictates that you must be growing for resale to order from us since we are not collecting sales tax.
If we aren't a match, we understand. It's not you, it's us.
We would look awful in orange jumpsuits.