Best SellerPurple Cosmos Seeds - VerdseedsPurple Cosmos Seeds - Verdseeds

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Purple Cosmos Seeds

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$7.49

Seeds for your next garden project, with planting guidance to help you get started.

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In stock — ships within 1 business day

Standard shipping to the USA: 4–6 business days.

Germination SupportPractical guidance when you need it
USA Garden FriendlySeeds selected for USA gardens
Secure CheckoutProtected payment experience
$7.49

Growing at a Glance

Plan your sowing with the light, space and growing conditions this flower needs.

Plant Height 3-4 ftVariety-specific habit
Light Requirement Bright Indirect Light, Partial Shade
Planting Season SpringFollow local frost dates
USDA Zone Zone 2~12Selected for USA gardens
Germination 7-21 DaysKeep evenly moist
Days to Maturity 70-120 DaysVariety dependent
Plant Spacing 8-18 inAllow healthy airflow
Growing Difficulty EasyGrowing support available

Flower Performance

Picture this variety in your garden, from its flower colors to when it blooms.

Flower Color Purple
Bloom Period Summer, Late Summer, Fall, Until Frost
Life Cycle AnnualAnnual, biennial or perennial
Garden Use Pollinator Gardens, Beds, BordersBest-fit garden settings
Shipping & Returns

Simple delivery. Clear support.

Shipping

Most orders ship within 24 hours of payment confirmation, excluding weekends and U.S. federal holidays. Standard transit takes 4–6 business days.

Returns & order issues

Customers may return seed products within 30 calendar days of delivery, including unopened, opened or used items. We cover return shipping for quality issues, shipping errors or transit damage.

Seeds are living products. If you have germination questions, our team provides practical growing guidance to help you troubleshoot.

About this seed

Why gardeners choose this variety

Purple cosmos (Cosmos bipinnatus) is an annual featuring purple to lavender daisy-like flowers with yellow centers. Plants have finely divided, feathery, airy foliage. Reaches 3–4 feet tall. Blooms from summer to fall.

Key features

What makes it stand out

  • Open flower heads bring an airy look to borders.
  • Finely divided foliage mixes easily with other annuals.
  • Purple tones add depth to mixed planting.
Perfect for

Best garden uses

  • Sunny mixed borders
  • Informal flower beds
  • Cut-flower gardens
Growing tips

A stronger start

  • Sow after frost into a sunny, well-drained bed.
  • Avoid heavy nitrogen feeding, which encourages leaves at the expense of flowers.
  • Water young plants steadily and support tall stems if needed.
  • Remove fading flowers to encourage further bloom.
  • 5 stars: 1 (50%)
  • 4 stars: 1 (50%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
E
Edward Lewis
Perfect for wildflower gardens

I planted these in my wildflower meadow, they thrived there. Purple flowers are vibrant and delicate, they self-seed nicely and come back every year. They also attract butterflies and bees to the garden.

S
Stephanie Clark
Stunning purple cosmos blooms

These cosmos seeds grew into beautiful plants with large, delicate purple flowers that bloom all summer. They are easy to grow, drought tolerant, and add a romantic touch to my garden. They also make great cut flowers.

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