Tanacetum parthenium Orinoco | Feverfew

Elegant creamy-white Feverfew with semi-double blooms, abundant flowering, and exceptional cut flower quality.

Tanacetum parthenium 'Orinoco' is a premium Feverfew variety developed specifically for professional cut flower production. Its delicate cream-white, semi-double flowers create a soft, romantic appearance that blends beautifully with both pastel and vibrant floral arrangements. The gently layered petals and warm creamy tones make Orinoco an outstanding bouquet filler for wedding flowers, garden-style bouquets, and luxury floral designs.

This high-performing variety produces strong, slender, well-branched stems carrying masses of blooms with remarkable uniformity. Thanks to its short production time, excellent stem quality, and reliable year-round greenhouse performance, Orinoco is an ideal choice for flower farmers seeking consistent harvests throughout the season.

Its elegant flowers and airy branching add movement, texture, and natural charm to every bouquet.

Plant Details

• Botanical name: Tanacetum parthenium
• Common name: Feverfew
• Variety: Orinoco
• Plant type: Hardy annual / short-lived perennial
• Flower colour: Creamy white
• Flower type: Semi-double
• Plant height: 60–80 cm
• Stem length: 60–80 cm
• Days to maturity: 75–90 days
• Growing location: Greenhouse or field
• Sowing period: Year-round under protection
• Light: Full sun
• Vase life: 7–10 days fresh; excellent for drying
• Use: Cut flowers, bouquet filler, dried flowers, cottage gardens, borders, pollinator gardens

Sowing Instructions

Sow seeds 8–10 weeks before the last expected frost or throughout the year for greenhouse production.

Surface sow the pelleted seeds and do not cover, as light is required for germination. Maintain temperatures of 18–21°C (64–70°F).

Seedlings are typically ready for transplanting after 4–5 weeks.

For outdoor production, sow from February to May for flowering later the same season, or sow during August to September for overwintering and early flowering the following year.

Growing Tips

Grow in full sun and fertile, well-drained soil for the highest-quality stems.

Orinoco naturally develops strong branching, producing numerous flowering sprays with exceptional uniformity and continuous blooming.

After the first flowering flush, cut plants back to ground level to encourage fresh growth and repeated harvests.

In mild climates, plants may overwinter and flower again in subsequent seasons.

Harvest

Harvest stems when approximately 75% of the flowers on each spray are fully open for the longest vase life and optimal post-harvest quality.

For dried flowers, allow all flowers on the spray to open completely before harvesting.

Why You'll Love Orinoco

• Premium florist-quality Feverfew
• Soft creamy-white semi-double flowers
• Strong, slender, well-branched stems
• Very abundant flowering
• Short production time
• Consistent, high-quality harvests
• Ideal bouquet filler for weddings and natural-style floristry
• Suitable for year-round greenhouse production
• Excellent fresh and dried cut flower
• Easy to grow from seed
• Perfect for flower farms and cutting gardens

Tanacetum parthenium Orinoco combines elegant creamy-white blooms, exceptional branching, and reliable year-round performance. Its refined semi-double flowers and premium stem quality make it an outstanding choice for flower farmers, florists, and gardeners looking to grow a versatile, high-value filler flower for fresh and dried floral arrangements.