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Pinkie Cosmos Seeds

Scientific name Cosmos bipinnatus

About this variety

Pinkie Cosmos Seeds grow tall, airy annual plants with pink flowers. This is garden cosmos with finely divided foliage and an open branching habit.Use it for pink cut flowers, airy borders, pollinators, cottage gardens, and mass planting. Cosmos performs best in full sun and modest soil; excess fertility can create large plants with delayed flowering.Direct sow after frost...

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Alliance of Native Seedkeepers  |  SKU: FL154
$150 USD $200
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At a glance

The facts most gardeners need first

View the full variety record
40 minimum seeds per packet
  • Germination7–14 Days days · 65–80 °F
  • First bloom / maturity70-79 Days · 70-79 Days
  • SunFull sun
  • Support & spacingStake · space 12 in · rows 24 in
  • Growth habitUpright/Erect · Annual · 37–48 in tall
  • Best usepollinator gardens, informal cutting, low-input beds, and warm-season color
Secure checkout Details
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Triple-tested seed qualityRegular quality and germination checks support every packet.

We regularly test seed quality and germination as lots move through storage and packing. We stand behind the seed we send and want customers to contact us when a packet does not perform as reasonably expected.

1-year seed warrantyCoverage begins on the date of purchase.

When properly stored, planted, and cared for, we guarantee reasonable germination and true-to-type growth for one year from the date of purchase. Conditions outside our control—including extreme weather, pests, unsuitable storage, and gardener error—are excluded. Contact us when something is not right so we can review the situation and work toward a replacement, refund, or another fair resolution.

Non-GMO / BE seed policyWe do not buy or sell genetically engineered or bioengineered seed.

Every seed variety we sell is non-GMO.

USDA’s National Bioengineered Food Disclosure Standard defines bioengineered foods as containing detectable genetic material modified through in vitro recombinant DNA methods in ways not achievable through conventional breeding or found in nature.

  • Hybrid means parent lines were conventionally crossed; hybrid does not mean GMO.
  • Heirloom and open-pollinated describe how a variety is maintained and reproduced.
  • Organic certification is separate and is shown only when verified for the individual product.

Read how we define heirloom, hybrid, and GMO/BE seed · USDA BE Standard

Packed in Colerain, North CarolinaPrepared in our seed room for gardens across the country.

Seeds are packed and shipped from Colerain, North Carolina. Our packets use forestry-certified paper, and we use recyclable paper mailers where appropriate. AONSK is also a 1% for the Planet partner while continuing to reduce waste in packing and fulfillment.

Seed-starting profileDifficulty, preparation, reliability, and timing Open

Seed success profile

Gardener experience Beginner-friendly
Germination difficulty Straightforward
Preparation before sowing
Use a fine, clean mix and steady moisture; follow the light and depth guidance below.
Germination speed
7–14 Days
Growing complexity
Low to moderate; spacing, drainage, and seasonal timing matter more than heavy feeding.
Patience and timing
70–80 Days
Is this seed a good match for your experience?
Expected germination
7–14 Days
Germination temperature
65–80 °F
Stratification
Not required for routine sowing in the current product record.
Scarification
Not required.
Pre-soaking
Not required.
Light during germination
Cover lightly to the listed depth and provide strong light after emergence.
Germination pattern
Good with fresh seed, correct temperature, and even moisture.
Transplant sensitivity
Direct sowing is preferred; transplant only while young and minimize root disturbance.
Starting method
Cataloged as suitable for direct sowing; follow the product-specific timing and depth.
Best chance of success
Sow after frost in warm soil, plant shallowly, and keep fertility modest.
Planning window

Plan around 7–14 Daysat65–80 °F. Keep moisture, light, and preparation aligned with the sowing instructions below.

Slow germination is not automatically failed germination.

Maintain the listed temperature, moisture, light, and treatment conditions for the full expected window. Some seed lots emerge gradually rather than all at once.

1 Beginner-friendly 2 One extra step 3 Some experience helpful 4 Patient growers 5 Advanced propagation

Seed age, storage, sowing depth, moisture, temperature, light, local conditions, and aftercare can affect results. Last reviewed July 2026.

Browse AONSK seed-starting and garden guides

Garden tools

Need a plan for your space?

Open the garden-fit planner or soil calculator only when you need them.

Open garden tools Uses this product’s recorded growing information. Local weather and garden conditions may vary.

About this variety

What to expect from Pinkie Cosmos Seeds

Pinkie Cosmos Seeds produce pink flowers on tall, airy warm-season plants.

Read the complete product descriptionTraits, flavor, garden use, variety notes, and the full catalog record

Pinkie Cosmos Seeds grow tall, airy annual plants with pink flowers. This is garden cosmos with finely divided foliage and an open branching habit.

Use it for pink cut flowers, airy borders, pollinators, cottage gardens, and mass planting. Cosmos performs best in full sun and modest soil; excess fertility can create large plants with delayed flowering.

Direct sow after frost when soil has warmed to about 65°F. Rake seed lightly into loose soil, keep moist for the first 5 to 10 days, and thin to about 12 inches. Stake only where wind or storms repeatedly bend tall plants. For the full crop plan, read our growing guide.

The page keeps Cosmos bipinnatus distinct from other cosmos species and does not use one species photo or growth habit to describe the other. Compare this selection with the full collection before choosing by color or common name alone.

Additional variety overview

A tall Cosmos bipinnatus selection for pink bloom and pollinator activity.
View all growing and care factsBotanical identity, timing, climate, soil, spacing, mature size, and crop-specific details

Plant identity

Minimum seed count 40 seeds
Seed product profile Flower
Scientific name Cosmos bipinnatus
Common name Garden cosmos
Cultivar or variety Pinkie Cosmos
Also known as Cosmos, Cosmos Seeds - Pinkie
Color Pink
Life cycle Annual
Botanical family Asteraceae
Reproductive type Open-Pollinated (OP)
Heritage qualifiers Non-GMO
Native to the United States No - Introduced
Domestication note Mesoamerica (Mexico–Central America)

Seed success and gardener experience

Gardener experience Beginner-friendlyLevel 2 of 5
Germination difficulty StraightforwardLevel 2 of 5
Preparation before sowing Use a fine, clean mix and steady moisture; follow the light and depth guidance below.
Stratification Not required for routine sowing in the current product record.
Scarification Not required.
Pre-soaking Not required.
Light during germination Cover lightly to the listed depth and provide strong light after emergence.
Germination pattern Good with fresh seed, correct temperature, and even moisture.
Growing complexity Low to moderate; spacing, drainage, and seasonal timing matter more than heavy feeding.
Transplant sensitivity Direct sowing is preferred; transplant only while young and minimize root disturbance.
First harvest or bloom 70–80 Days
Best chance of success Sow after frost in warm soil, plant shallowly, and keep fertility modest.

Timing and climate

Days to maturity 70-79 Days
Germination 7–14 Days
Germination temperature 65–80 °F
Planting season Spring
Bloom season Summer/Fall
Frost tolerance Tender
Sunlight Full sun
Water needs Drought tolerant

Site, soil, and space

Soil type Sandy loam
Preferred soil pH 6.5–7.0
Seed depth 1/4 in
Plant spacing 12 in
Row spacing 24 in
Mature height 37–48 in
Growth habit Upright/Erect
Support needed Stake
Suitable growing locations In-ground bed, Raised bed, Greenhouse, High Tunnel, Containers, Wildflower meadow, Community garden

Crop-specific details

Flavor profile Their mild, cucumber-like flavor complements a variety of dishes.
Garden toolsOpen the garden-fit planner, planting-window questions, or soil calculator only when useful

Uses this product’s recorded growing information. Local weather, soil, and garden conditions may vary.

Garden-fit planning for this variety

Will Pinkie Cosmos Seeds fit your garden?

Check bloom timing, cut-flower or pollinator use, height, sun, sowing method, and life cycle.

Questions for this flower seed
Seed-starting fit and patience
Recorded product profileBeginner-friendlyStraightforwardRead why
Soil test, pH, drainage, and amendment calculator Have a laboratory soil report? Enter pH, nutrients, texture, bed size, and site observations here. Open soil tools
Recorded soil typeSandy loam
Recorded pH range6.5–7.0
Water needsDrought tolerant
LightFull sun

Use a current laboratory soil test

Soil-test interpreter

Compare your report with this product's listed pH target: 6.5–7.0.

This tool interprets values you enter; it does not replace laboratory or Cooperative Extension amendment rates. Soil test methods and nutrient recommendations vary by region.

Full growing record

Open only the section you need

How to start Pinkie Cosmos Seeds from seedPreparation, timing, depth, germination, transplanting, spacing, and early care

Recorded germination plan

Expected germination
7–14 Days
Germination temperature
65–80 °F

Complete sowing and planting guidance

Direct sow after frost into warm, loose soil. Plant shallowly, keep moist for 5 to 10 days, and thin early.
How to grow this specific varietyLight, water, fertility, support, spacing, airflow, crop behavior, and season-long care

Variety-specific growing notes

Thin for airflow and do not overfeed.

Complete growing guide

Sow outdoors after frost when soil is at least about 65°F. Do not bury deeply.

Practical field and garden tips

Avoid rich soil and heavy fertilizer. Deadhead or cut often for continued bloom.
Harvest, storage, uses, and benefitsWhen and how to harvest, ways to use the crop, storage, culinary value, habitat value, and garden roles

Harvest and use notes

Cut regularly or leave selected heads to mature for seed.

Uses and benefits

Pollinator habitat, informal cutting, cottage gardens, and low-input summer color.
Seed saving and carrying the variety forwardPollination, isolation, selection, harvest, cleaning, drying, and storage
Let selected heads dry fully, then strip the long dark seed from the receptacle. Separate species and varieties because cosmos can cross within a species.
Problems and answersPests, diseases, troubleshooting, practical response, and product-specific questions

Variety troubleshooting summary

Poor germination usually follows cold or deeply buried seed. Delayed bloom usually follows rich soil or shade.

Complete pest and problem guide

Aphids and spider mites may occur. Root rot follows wet soil. Tall plants can lodge in storms; overly fertile plants may produce foliage instead of flowers.

Questions gardeners ask

Q: Can cosmos be direct sown?
A: Yes. Direct sowing after frost into warm soil is usually the simplest method.

Q: Why are my plants leafy but not flowering?
A: Excess nitrogen, too much irrigation, or insufficient sun are common causes.

Q: Are orange and pink cosmos the same species?
A: Not always. Dwarf Orange is listed as Cosmos sulphureus, while Pinkie is Cosmos bipinnatus.
History, provenance, and cultural contextWhat is documented, what is reported, what remains uncertain, and how the variety reached gardeners

Scientific name: Cosmos bipinnatus

Common name: Garden cosmos

Cultivar or variety: Pinkie Cosmos

Provenance summary

Species identity and cultivation follow extension references; exact cultivar pedigree is not claimed.

Plant and variety history

Cosmos bipinnatus is native to Mexico or tropical America and is widely grown as an annual ornamental. The page preserves the exact species identity in the product record.

Source and record notes

https://plants.ces.ncsu.edu/plants/cosmos-bipinnatus/

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