Trachelium Lake Michigan White Seeds

Grow tall, cloud-like white filler flowers for bouquets and borders. Trachelium Lake Michigan White produces a large central umbel with smaller satellite umbels on sturdy upright stems.

Ready to grow tall bouquet stems? Follow our step-by-step Trachelium Grow Guide for sowing, germination, regional timing and care advice.

Quick Grow Facts

• Scientific name: Trachelium caeruleum
• Series and colour: Lake Michigan White
• Plant type: Tender perennial commonly scheduled as a cut-flower crop
• Seed form: Pelleted; sow each pellet intact
• Pretreatment: None; do not soak, chill, scarify, crush or peel the pellet
• Sow depth: Surface sow and do not cover
• Germination light: Optional; provide bright light after emergence
• Germination temperature: 17–21°C
• Germination reference: Allow 15–21 days for home emergence. The controlled 5–7-day interval measures 50% to maximum germination, not sowing to first emergence
• Best method: One pellet per clean cell; tray sowing preferred
• Position: Sun to partial sun; protect new plants from severe heat
• Garden spacing: About 25 cm in a home garden; retain airflow and access
• Cut-row density: About 65 plants/m² unpinched or 24 plants/m² pinched
• Growth form: Upright cut-flower filler, about 76–107 cm; support recommended
• Flowering: Obligate long-day crop; dependable professional flowering uses a 16-hour day
• Planning window: About 7–9 weeks in plugs, then 10–18 weeks from transplant to finish under managed conditions; home timing varies
• Harvest: Cut when half or more of the small florets are open

Pellet Moisture Matters

Place the pellet on pre-moistened fine seedling mix, wet it thoroughly and keep the surface evenly moist until the coating softens and germination starts. A hard dry pellet cannot release the seed; a saturated airless tray encourages damping-off.

Growing and Cutting Notes

Transplant rooted plugs after about 7–9 weeks and harden them for 7–10 days. Use fertile, loose, well-drained soil, steady root-zone moisture, moderate feeding and good airflow. Install support netting early. Pinching is optional; use the wider 24-plants/m² system for branched cut stems and allow extra crop time.

Follow the guide's regional timing, surface-sowing method and long-day flowering guidance.

Ornamental seed: Do not eat seed, pellets, seedlings or plant parts. Pelleted describes seed form and does not confirm treatment status; follow the delivered lot warning.

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