Sea Shells Apricot

Cosmos

60d to harvest

Delicate as lace yet richly abundant, Sea Shells Apricot blooms in warm apricot-orange petals that curl and overlap like tiny seashells, catching the light with a soft, glowing shimmer. The airy, feathery foliage frames each flower head on sturdy stems, creating a graceful, long-lasting cut-flower presence with a gentle, honeyed allure for pollinators. Grow this annual for a breezy, sunlit display that turns beds and borders into a moving bouquet—ideal for fresh arrangements and effortless garden charm.

Crop Dates

Growing note: In frost-free Zone 10b, grow this cool-season crop during the cooler dry season (October–February).

Milestone	Date
Start Indoors	—
Climate	Frost-Free Climate
Transplant / Sow Outdoors	Oct 1st
Harvest Begins	Nov 30th
Harvest Ends	Feb 28th

Crop Details

Trait	Value
Days to Maturity	60
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Surface
Germination Temp (°F)	70
Min Soil Temp (°F)	55
Min Night Temp (°F)	50
Harden Off (days)	Not Required

Frequently Asked Questions

What pest or disease commonly affects Cosmos bipinnatus, and what should I do if I see it?

Cosmos bipinnatus is frequently bothered by aphids, especially on new growth, which can cause distorted leaves and sticky honeydew. Rinse plants with a strong jet of water, then spray with insecticidal soap (follow label) and repeat every 5–7 days until aphids stop. If you notice powdery-looking white patches, improve airflow by spacing plants and avoid overhead watering; remove heavily affected leaves to slow spread.

How often should I water Cosmos bipinnatus during the main growing phase?

During active growth (roughly weeks after seedlings establish through the first flush of blooms), water deeply about 1–2 times per week, letting the top 1–2 inches of soil dry between waterings. Cosmos tolerate short dry spells, so don’t keep soil constantly wet—overwatering increases disease risk and can reduce flowering. In hot weather, you may need more frequent deep watering, but only if the soil surface has dried.

How can I tell when Cosmos bipinnatus is ready to harvest?

Harvest when the flowers have fully opened and the petals are still fresh and crisp—cosmos typically reaches this stage about 60 days from sowing. For seed, wait until flower heads are dry and brown, then harvest the heads before they fully shed; rub gently to collect seeds. If harvesting for cut flowers, pick blooms in the morning and remove spent heads to encourage more flowering.