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Dwarf Red Cosmos

Scientific name Cosmos sulphureus

About this variety

Dwarf Red Sulphur cosmos seeds produce red bloom on 19–24 in upright/erect plants. Annual growth and Summer/Fall bloom make it useful for meadow-style color, cut flowers, low-input sunny beds, and pollinator use.About Dwarf RedDwarf Red is an annual sulphur cosmos with red color, 19–24 in mature height or spread, and an upright/erect habit. Harvest form or size: Flower...

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At a glance

The facts most gardeners need first

View the full variety record
30 minimum seeds per packet
Gardener experience

Easy

Germination difficulty

Easy

Germination time

7-14 Days at 65–80 °F seed-zone soil temperature

  • Germination
    7-14 Daysa seed-zone soil temperature of 65–80 °F
  • First bloom / maturity
    60-69 DaysCounted from sowing to the primary bloom or market stage used for the listed maturity range.
  • Sun
    Full sun
  • Support and spacing
    No support needed · space 12 in · rows 18 in
  • Growth habit
    Upright or erect · Annual · 19–24 in tall
  • Best use
    Meadow-style color, cut flowers, low-input sunny beds, and pollinator use
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.
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.

Garden tools

Need a plan for your space?

Use the garden-fit planner and soil calculator to turn the recorded growing facts into a practical plan.

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

Variety field guide

What to expect from Dwarf Red Cosmos

Dwarf Red Sulphur cosmos seeds produce red bloom on 19–24 in upright/erect plants. Annual growth and Summer/Fall bloom make it useful for meadow-style color, cut flowers, low-input sunny beds, and pollinator use.

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

Dwarf Red Sulphur cosmos seeds produce red bloom on 19–24 in upright/erect plants. Annual growth and Summer/Fall bloom make it useful for meadow-style color, cut flowers, low-input sunny beds, and pollinator use.

About Dwarf Red

Dwarf Red is an annual sulphur cosmos with red color, 19–24 in mature height or spread, and an upright/erect habit. Harvest form or size: Flower or head form characteristic of Dwarf Red; mature plant 19–24 in. Botanically it is Cosmos sulphureus. Maturity or first bloom: 60-69 Days; germination: 7-14 Days at 65–80 °F. Best for meadow-style color, cut flowers, low-input sunny beds, and pollinator use. Grown for ornamental or habitat use rather than as a food crop.

History and provenance

Garden cosmos and sulphur cosmos come from Mexico and neighboring parts of the Americas. They became widely grown annual flowers because direct-sown plants flower freely in sun and modest soil. Cultivar names distinguish color, stature, and petal form, but available evidence does not assign a breeder or release date where the public record is incomplete. A complete public breeder or release record for the named Dwarf Red strain has not been located. The cultivar name is retained, but no person, community, date, or place of origin is assigned without reliable documentation. Dwarf Red Sulphur Cosmos seeds grow into compact, easy-care annual flowers with ferny foliage and vivid blooms ranging from deep orange-red to scarlet. These cheerful flowers thrive in full sun, tolerate dry to moderate conditions once established, and bring bright summer-to-fall color without demanding rich soil or heavy maintenance. Plant Dwarf Red Sulphur Cosmos seeds for a reliable burst of warm red-orange color that attracts bees, butterflies, and other beneficial pollinators. The dwarf habit makes this Sulphur Cosmos especially useful near paths, in front-of-border plantings, and in mixed annual displays where long bloom, pollinator value, and manageable height matter.

Growing facts

Scientific name Cosmos sulphureus
Life cycle Annual
Maturity / first bloom 60-69 Days
Germination 7-14 Days at 65–80 °F
Seed depth 1/4 in
Plant height / spread 19–24 in
Growth habit Upright/Erect
Spacing 12 in between plants; 18 in between rows
Sunlight Full sun
Soil Loamy; pH 6.0–6.5
Water Drought tolerant
Support No-Support

Starting Dwarf Red from seed

How to grow Dwarf Red Sulphur cosmos

Botanical identity: Cosmos sulphureus. Life cycle: Annual.

Sow 1/4 in and use a seed-zone temperature near 65–80 °F. Expected emergence: 7-14 Days. Use clean seed-starting conditions, the listed depth and temperature, and steady moisture without saturation.

Plant during Late Spring. Space plants 12 in apart with 18 in between rows or planting bands.

Provide Full sun, drought tolerant water, and loamy near pH 6.0–6.5. Support: No-Support.

Garden performance and care

For a longer display of Dwarf Red, remove spent blooms unless seed is being saved. Give the plant its listed spacing, cut flowers with clean tools, and leave selected heads to mature fully for seed. Expected emergence is 7-14 Days; the listed maturity or bloom timing is 60-69 Days.

Harvest, bloom, and uses

Dwarf Red is suited to meadow-style color, cut flowers, low-input sunny beds, and pollinator use. Its red flowers and 19–24 in stature help determine whether it belongs in a border, cutting row, container, meadow edge, or restoration-style planting. Grown for ornamental or habitat use rather than as a food crop.

Saving seed

Save seed from several healthy, true-to-type Dwarf Red plants identified before harvest. Confirm the pollination system of Cosmos sulphureus, separate compatible varieties that flower together, and remove clear off-types before they shed pollen or seed. Allow fruit, pods, ears, or seed heads to reach full biological maturity, then clean and dry the seed completely. Label the lot with variety, source, year, isolation method, number of seed plants, and any selection notes; store it cool, dark, and dry and test germination before an important planting.

Common problems

Common concerns: damping-off from saturated media; poor emergence from wrong temperature or depth; leggy seedlings from weak light; crowding and weak airflow; lodging in wind or rain; feeding damage from slugs, caterpillars, beetles, or mammals; foliar disease under prolonged leaf wetness. Management: use clean media, the sowing depth and temperature, strong light, appropriate thinning, and morning irrigation at soil level. Match support to plant height before wind becomes a problem. Inspect regularly and use the least disruptive control appropriate to the pest, plant, and pollinator setting. Remove diseased debris and rotate annual flower beds where recurring disease is severe.

Frequently asked questions

When is Dwarf Red ready?

60-69 Days from sowing to the primary bloom or market stage used for the listed maturity range

How long does germination take?

Expect 7-14 Days near 65–80 °F; actual emergence changes with moisture, seed condition, and soil temperature.

How large does it grow?

About 19–24 in with an upright/erect habit. Support: No-Support.

Can it grow in a container?

Well suited to containers when drainage, spacing, light, and moisture are maintained

How is it used?

Primary role: Meadow-style color, cut flowers, low-input sunny beds, and pollinator use. Grown for ornamental or habitat use rather than as a food crop.

Can I save seed?

Yes where the crop biology allows, but keep compatible varieties isolated, use several healthy plants, wait for full seed maturity, dry thoroughly, and label the lot.

Minimum Seed Count:30 seeds

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 Dwarf Red Cosmos fit your garden?

Use your space, timing, light, soil, water, and growing preferences to make a more informed choice. Start with the essentials, then open only the detail groups that matter to you.

Rules-based · no AI · optional answers

Add an optional ZIP code and planting date for a broad frost-window check.Use local forecasts and measured soil temperature for final planting decisions.
1Essential fitTiming, light, and space
2Temperature and exposureOptional microclimate detail
3Soil, drainage, and waterRoot-zone readiness
4Questions for this garden seedCrop-specific decisions
5Seed-starting fit and patienceMatch the propagation work
Recorded product profileBeginnerEasyRead 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 typeLoamy
Recorded pH range6.0–6.5
Water needsDrought tolerant
LightFull sun

Laboratory report interpreter

Soil readiness for Dwarf Red Cosmos

Cosmos sulphureus

Enter only the values your report provides. The result compares them with this crop’s recorded needs and keeps laboratory recommendations authoritative.

Core report valuesStart here
Advanced laboratory valuesOptional method-aware detail

Full growing record

Complete growing and seedkeeping record

Starting and plantingSeed preparation, sowing, germination, transplanting, spacing, and early establishment
How to grow Dwarf Red Sulphur cosmos

Botanical identity: Cosmos sulphureus. Life cycle: Annual.

Sow 1/4 in and use a seed-zone temperature near 65–80 °F. Expected emergence: 7-14 Days. Use clean seed-starting conditions, the listed depth and temperature, and steady moisture without saturation.

Plant during Late Spring. Space plants 12 in apart with 18 in between rows or planting bands.

Provide Full sun, drought tolerant water, and loamy near pH 6.0–6.5. Support: No-Support.
Season-long growing guideWater, fertility, support, weather response, pollination, containers, and care through maturity
How to grow Dwarf Red Sulphur cosmos

Botanical identity: Cosmos sulphureus. Life cycle: Annual.

Sow 1/4 in and use a seed-zone temperature near 65–80 °F. Expected emergence: 7-14 Days. Use clean seed-starting conditions, the listed depth and temperature, and steady moisture without saturation.

Plant during Late Spring. Space plants 12 in apart with 18 in between rows or planting bands.

Provide Full sun, drought tolerant water, and loamy near pH 6.0–6.5. Support: No-Support.
Harvest, storage, and usesRecognizing maturity, harvesting cleanly, handling and storage, kitchen uses, and garden roles

Harvest and storage

Harvest and use - Dwarf Red. 60-69 Days. Principal harvest form or size: Flower or head form characteristic of Dwarf Red; mature plant 19–24 in; color at the main harvest or mature stage: Red. Best for meadow-style color, cut flowers, low-input sunny beds, and pollinator use. Grown for ornamental or habitat use rather than as a food crop. For seed saving, allow selected fruit, pods, ears, or seed heads to reach full biological maturity rather than using the normal eating or cutting stage. Save seed from several healthy, true-to-type Dwarf Red plants identified before harvest.

Uses and garden roles

Dwarf Red is suited to meadow-style color, cut flowers, low-input sunny beds, and pollinator use. Its red flowers and 19–24 in stature help determine whether it belongs in a border, cutting row, container, meadow edge, or restoration-style planting. Grown for ornamental or habitat use rather than as a food crop.
Seed savingSelection, pollination, isolation, full maturity, cleaning, drying, labeling, and storage
Save seed from several healthy, true-to-type Dwarf Red plants identified before harvest. Confirm the pollination system of Cosmos sulphureus, separate compatible varieties that flower together, and remove clear off-types before they shed pollen or seed. Allow fruit, pods, ears, or seed heads to reach full biological maturity, then clean and dry the seed completely. Label the lot with variety, source, year, isolation method, number of seed plants, and any selection notes; store it cool, dark, and dry and test germination before an important planting.
Pests, diseases, and troubleshootingPrevention, diagnosis, environmental disorders, common damage, and first-response checks
Common concerns: damping-off from saturated media; poor emergence from wrong temperature or depth; leggy seedlings from weak light; crowding and weak airflow; lodging in wind or rain; feeding damage from slugs, caterpillars, beetles, or mammals; foliar disease under prolonged leaf wetness. Management: use clean media, the sowing depth and temperature, strong light, appropriate thinning, and morning irrigation at soil level. Match support to plant height before wind becomes a problem. Inspect regularly and use the least disruptive control appropriate to the pest, plant, and pollinator setting. Remove diseased debris and rotate annual flower beds where recurring disease is severe.
Frequently asked questionsDecision-focused answers that supplement the detailed guides above
Frequently Asked Questions - Dwarf Red

When is Dwarf Red ready?
60-69 Days from sowing to the primary bloom or market stage used for the listed maturity range

How long does germination take?
Expect 7-14 Days near 65–80 °F; actual emergence changes with moisture, seed condition, and soil temperature.

How large does it grow?
About 19–24 in with an upright/erect habit. Support: No-Support.

Can it grow in a container?
Well suited to containers when drainage, spacing, light, and moisture are maintained

How is it used?
Primary role: Meadow-style color, cut flowers, low-input sunny beds, and pollinator use. Grown for ornamental or habitat use rather than as a food crop.

Can I save seed?
Yes where the crop biology allows, but keep compatible varieties isolated, use several healthy plants, wait for full seed maturity, dry thoroughly, and label the lot.
History and provenanceBotanical identity, cultivar history, regional or cultural context, uncertainty, and source records

Scientific name: Cosmos sulphureus

Common name: Sulphur cosmos

Cultivar or variety: Dwarf Red

Garden cosmos and sulphur cosmos come from Mexico and neighboring parts of the Americas. They became widely grown annual flowers because direct-sown plants flower freely in sun and modest soil. Cultivar names distinguish color, stature, and petal form, but available evidence does not assign a breeder or release date where the public record is incomplete. A complete public breeder or release record for the named Dwarf Red strain has not been located. The cultivar name is retained, but no person, community, date, or place of origin is assigned without reliable documentation. Dwarf Red Sulphur Cosmos seeds grow into compact, easy-care annual flowers with ferny foliage and vivid blooms ranging from deep orange-red to scarlet. These cheerful flowers thrive in full sun, tolerate dry to moderate conditions once established, and bring bright summer-to-fall color without demanding rich soil or heavy maintenance. Plant Dwarf Red Sulphur Cosmos seeds for a reliable burst of warm red-orange color that attracts bees, butterflies, and other beneficial pollinators. The dwarf habit makes this Sulphur Cosmos especially useful near paths, in front-of-border plantings, and in mixed annual displays where long bloom, pollinator value, and manageable height matter.

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Customer experience

Reviews for Dwarf Red Cosmos

Customer Reviews

Based on 2 reviews
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Heather Ressler (United States)

I've had excellent germination with these seeds. The flowers are a gorgeous deep orange and some petals have a hint of red. They are extremely easy to grow and mine reached about 18" tall, so they are perfect for a pot.

Hi Heather, we're thrilled to hear your seeds are thriving and adding such vibrant color to your space! Thank you for sharing your experience. Happy gardening!

T
Tina

Love these seeds. Great customer service. Great shipping. Doing red, white and blue next season.

Hi Tina! Thank you for your review. We are glad your Dwarf Red cosmos seeds arrived promptly, and we hope you have a wonderful growing season.