Petunia Grandiflora TriTunia Mix

Petunia Grandiflora TriTunia Mix Seeds

Petunia grandiflora TriTunia Mix is an F1 hybrid developed by Syngenta Flowers, created by selecting and combining the best performing varieties from three long-standing professional grandiflora series: Ultra, Storm, and Bravo. The result is a single high-performance series offering the widest range of traditional large-flowered grandiflora petunias, including bright solids, crisp bicolors, veined, and novelty patterns, all matched for uniformity in plant habit and flowering time within a tight seven-to-ten-day bloom window.
The series is recognized for exceptional vigor under challenging light conditions, performing especially well under the short, cooler days of the Gulf winter season. It delivers strong garden performance from the retail bench through the full growing season.

Variety Details

• Hybrid type: F1 Hybrid Pelleted Seeds
• Series: TriTunia
• Breeder: Syngenta Flowers
• Color range: Full mix of solids, bicolors, and veined patterns

Key Features

• F1 hybrid combining top performers from Ultra, Storm, and Bravo series.
• Widest range of large grandiflora flower types in one series.
• Uniform habit and tight flowering window across the mix.
• Earliest flowering grandiflora series, especially under short-day conditions.
• Strong garden vigor and performance from bench to landscape.
• Proven in tropical and warm climate trials.

Plant Information

• Height: 30–35 cm
• Spread: 30–35 cm
• Plant type: Annual
• Flowering: First year
• Sun: Full sun to light shade
• Soil: Fertile, well-drained soil
• Water: Moderate to regular

Seed Germination

• Seed depth: Surface sow, do not cover
• Germination time: 7–14 days
• Ideal germination temperature: 20–25°C

Growing Tips

• Surface sow onto moist germination medium without covering. Maintain consistent moisture during germination. Once established, feed weekly with a balanced flowering fertilizer to support the large-flowered habit.
• Pinch growing tips once to encourage fuller branching. Remove spent flowers regularly to extend the blooming period.

Gulf Planting Season

• Best sowing time in the Gulf: September – November (indoor nursery)
• Transplanting: October – December
• Expected flowering: December – April

Garden Uses

• Containers and decorative pots
• Bedding and mass planting
• Mixed color displays and borders
• Hanging baskets
• Commercial and retail ornamental production