Petunia Caliburst Yellow Seed

Petunia Caliburst Yellow Seed produces vivid yellow flowers on a compact Petunia and Calibrachoa hybrid. Controlled growth and cool-season durability make it useful for tidy patio displays.

Grow Guide: How to grow Petunia Caliburst Yellow from seed in South Africa.

Quick Grow Facts

• Plant Type: F1 Petchoa hybrid, grown as a frost-tender annual
• Scientific Name: Petunia sp. × Calibrachoa sp.
• Seed Form: Pelleted seed; sow one pellet per cell
• South African Sowing Time: Start protected trays about 8–10 weeks before safe planting-out weather; use the regional guide for local timing
• Position: Sun or partial sun; not full shade
• Sow Method: Surface-sow on pre-moistened fine mix, press into contact and do not cover; bright light supports home germination
• Pretreatment: None; mist thoroughly so the pellet coating softens
• Germination: Usually 7–10 days at 20–25°C; allow up to 14 days if home temperatures fluctuate
• Spacing: 25–38 cm
• Growth Form: Mounded, spreading and trailing
• Height: 15–25 cm
• Spread: 51–71 cm
• Flowering: Usually about 10–14 weeks from sowing in well-managed home conditions
• Current Packet Options: 5 pelleted seed, 100 pelleted seed, 1000 pelleted seed

Why Grow This Variety

• Vivid yellow flowers bring concentrated colour.
• Compact, controlled growth is easy to manage.
• The hybrid combines Petunia durability with Calibrachoa colour.
• Handles cool spells better than traditional Calibrachoa.

Garden Uses

Use Caliburst Yellow in patio pots, hanging baskets and compact garden spaces where its tidy growth form and bright flowers can stand out.

Growing Notes

• Use clean, fine, freely drained seedling mix. Surface-sow and mist the pellet until its coating softens; never bury it.
• Keep the surface evenly moist and humid only until emergence, then provide bright light and airflow.
• Move seedlings at about three true leaves and harden them gradually for 7–10 days before planting outside.
• Plant at the exact spacing above in fertile, freely drained soil and water at the root.
• Use a generous container and even moisture; do not treat Caliburst as a compact shade plant.

Brought to you by Ubuntuberg Seeds, where our mission is to cultivate humanity & harvest unity. Ubuntuberg Seeds: the highest quality seed stock in all of Southern Africa, sourced from sustainable farms, guaranteeing you the best quality seed stock.