Flowers Ageratum

Tall Blue Planet
(F1) Ageratum Seed

Product ID: 1835

Tall, upright, sturdy stems.

Tight blue flower clusters. Use as a classic filler for mixed bouquets or plant to attract bees and butterflies to your garden. Ageratum is also known as flossflower or blue mink. Ht. 24–30". Avg. 168,000 seeds/oz. Packet: 100 seeds.


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500 Seeds

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1,000 Seeds

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5,000 Seeds

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25,000 Seeds

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DAYS TO GERMINATION:7-10 days at 75-80°F (24-27°C).

Transplant (recommended): Sow 6-8 weeks before the last frost. Do not cover seed as light aids germination. Bottom water or mist to avoid covering seed with displaced soil. Transplant to cell packs or larger containers when the first true leaves appear. Harden off and transplant after the danger of frost has passed. No pinching or support is needed. Direct seeding is not recommended.

Sun. Ageratum will tolerate part shade where summers are hot.

Fertile soil with good drainage, and a pH of 5.0-6.0.



Fresh: Harvest when flower spikes 3/4 open. Dried: Harvest when flowers are completely open; hang. May be air-dried, but the flower color often fades.

Cut flower or dried flower. Back of beds, borders, and mass plantings.

Ageratum houstonianum

Flossflower, blue mink

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Quick Facts

Latin Name

Ageratum houstonianum

Days To Maturity

Average number of days from seeding date to harvest, within a specific crop group. If a transplanted crop: average number of days from transplant date. Not sure if crop is direct-seeded or transplanted? Check the Growing Information box for details. If crop can be both direct-seeded or transplanted, days to maturity refers to direct seeding. Days to maturity for all flowers and herbs is calculated from seeding date.

80 - 100 Days

Life Cycle

Plants can be Annuals (single growing season), Perennials (grow year after year), Tender Perennials (grow year after year in warmer climates; and in some cases when given special protection in colder climates), or Biennials (require two years to mature).


Hybrid Status

Hybrid: The offspring of a cross between two or more distinct parent lines, usually of same species, and selected for improved traits.
Open-pollinated: A non-hybrid variety that can reproduce itself in kind, demonstrating relatively stable traits from one generation to the next.

Hybrid (F1)

Product Features

Use for Cut Flowers and Bouquets Use for Cut Flowers and Bouquets
Variety good for fresh cut-flower displays.
Ideal for Drying and Crafts Ideal for Drying and Crafts
Variety is excellent for creating dried flowers.
Grows Well in Containers Grows Well in Containers
Variety does well when grown in a container.
Attracts Beneficial Insects Attracts Beneficial Insects
Variety attracts and supports pollinators and/or insects that prey on garden pests.

Grows Well in Containers Use for Cut Flowers and Bouquets Ideal for Drying and Crafts Attracts Beneficial Insects