A family owned business serving gardeners since 1994

Ageratum Seed ( Annual )

Gardening info:


Ageratum flower, also known as floss flower or Ageratum houstonianum, is an annual garden flower valued for its colorful, long-lasting blooms and ease of care once established. Although easily grown from seed, container-grown ageratum plants are sometimes found in nurseries or garden centers in early spring. One of only a few annuals that can tolerate light shade, ageratum flower thrives with very little maintenance if provided with well-drained soil and adequate water. Ageratum flowers appear in mid-summer through mid-fall in shades of blue, purple, pink and white, depending on variety, although blue blooms are most popular.

Ageratum is an annual except in zones 9 and 10, where it may survive as a perennial.

Start ageratum seeds indoors about 8 to 10 weeks before the final frost in your area, usually around February or March. Fill a seed-starting tray with sterile seed-starting mix. Sprinkle the fine seeds on the surface of the soil and tamp them down, but don't cover with soil, as light is required for germination.



Maui White Ageratum seeds.
LET965 Maui White Ageratum ( Pelleted seeds )

Maui White Ageratum is an exceptional dwarf variety prized for its masses of fluffy, snow-white flowers and compact, well-branched growth habit. Blooming continuously from early summer until frost, this award-winning selection produces a carpet of bright white blossoms that create a striking contrast against its rich green foliage.

The soft, powder-puff flowers are composed of hundreds of tiny florets that cluster together to form attractive rounded blooms. Their clean white color makes Maui White an outstanding companion for virtually any flower color in the garden and an excellent choice for brightening borders, pathways, and containers.

Unlike older ageratum varieties that can become tall and leggy, Maui White remains neat, compact, and heavily branched, providing season-long color with minimal maintenance.

Historical Tidbit: Ageratums are native to Central America and Mexico and have been popular garden flowers since the Victorian era. Their botanical name comes from the Greek word ageratos, meaning "not growing old," a reference to the flowers' ability to retain their fresh appearance for extended periods.

White-flowered selections such as Maui White became particularly popular in formal bedding schemes because they provided a clean, elegant appearance while blending beautifully with nearly every garden color palette.

Growing Information:

  • Botanical Name: Ageratum houstonianum
  • Plant Type: Annual
  • Height: 6–10 inches
  • Spread: 8–12 inches
  • Bloom Season: Summer through frost
  • Sun Exposure: Full sun to partial shade
  • Soil: Well-drained, moderately fertile soil
  • Water Needs: Moderate

Germination: Sow seeds indoors 6–8 weeks before the last expected frost. Press seeds lightly into the soil surface without covering, as light aids germination. Maintain temperatures of 70–75°F. Germination usually occurs within 7–14 days.

Container Growing: Maui White performs beautifully in containers, hanging baskets, and window boxes where its tidy growth habit and nonstop flowering provide months of dependable color.

Pelleted seeds for easy germination.
 25mg pack ( about 20 pelleted seeds ) $2.95
Florist Blue Ageratum seeds.
TWT144 Florist Blue Ageratum

Florist Blue Ageratum is one of the finest blue flowering annuals available, producing masses of soft, fluffy blooms in a rich lavender-blue shade that few other garden flowers can match. The compact plants become covered with rounded clusters of fuzzy blossoms, creating a cloud of cool color from early summer until frost.

The unique flowers consist of hundreds of tiny thread-like florets grouped into soft pom-pom clusters that almost appear powdered with blue velvet. Their distinctive texture and color make Florist Blue an outstanding companion for bright annuals such as marigolds, zinnias, petunias, salvias, and cosmos.

Whether planted in flower beds, borders, containers, or window boxes, Florist Blue provides months of dependable color while maintaining a neat, attractive appearance throughout the growing season.

Growing Information:

  • Botanical Name: Ageratum houstonianum
  • Plant Type: Annual
  • Height: 8–12 inches
  • Spread: 10–14 inches
  • Bloom Season: Summer until frost
  • Sun Exposure: Full sun to partial shade
  • Soil: Well-drained fertile soil
  • Water Needs: Moderate

Germination: Sow indoors 6–8 weeks before the last frost date. Press seeds lightly into the surface without covering, as light assists germination. Maintain temperatures between 70–75°F. Seeds typically germinate within 7–14 days.

Container Growing: Florist Blue is particularly attractive in decorative containers where the masses of blue flowers can be appreciated up close. Its compact habit makes it ideal for patio displays, mixed planters, and porch containers.

 55mg pack ( about 500 tiny seeds ) $4.95

All seed packets listed on this page are in stock and ready to ship.