Vinca Pacifica Halo Magenta Xp Seeds

Grow Vinca Pacifica Halo Magenta XP for bright summer colour on upright, mounded Catharanthus roseus plants in sunny beds and containers. The raw-seed variants contain 30, 1,000 or 5,000 seeds.

Ready for colourful summer beds or pots? Read the Vinca Grow Guide for warm sowing, careful watering and healthy transplants.

Quick Grow Facts

• Plant type: Tender perennial, generally grown as an annual where frost occurs
• Scientific name: Catharanthus roseus
• Seed form: Raw; variants contain 30, 1,000 or 5,000 seeds. Raw describes form, not chemical-treatment or food-safety status.
• Pretreatment: None; do not soak, chill or scarify
• Sow time: Warm season; start in protected trays when 24–26°C can be maintained and plant out after frost
• Position: Full sun; freely draining soil
• Sow depth: Cover with an even vermiculite layer; do not leave seed exposed
• Germination light: Dark during Stage 1; uncover and give bright light immediately after emergence
• Germination temperature: 24–26°C
• Germination: 24–26°C; the controlled-production interval from 50% to maximum germination is about 3–5 days, not a promise of first emergence after sowing at home
• Transplant: About five weeks in plugs under controlled conditions; move rooted plugs when ready, allowing longer at home. Harden for 7–10 days and plant after frost when soil is above 16°C
• Spacing: The series uses 15 cm production spacing; allow additional room for mature growth and airflow in home gardens, especially where humidity or summer rainfall limits drying
• Size and habit: Pacifica XP series: mounded, upright and well branched; about 25–36 cm high × 15–20 cm wide
• Flower outcome: Controlled small-container production uses about five plug weeks plus five to six weeks after transplant; home flowering varies with warmth, light and establishment

Why Grow Halo Magenta XP?

• Bright flowers for sunny summer beds and pots
• Uniform, well-branched upright Pacifica XP habit
• A compact 5–7-day flowering window across the Pacifica XP series under the same controlled culture; this is not a sowing-to-flowering clock
• Pacifica XP performance in hot, dry, sunny conditions once established

Growing Notes

Sow one raw seed per clean cell. Cover with an even vermiculite layer, keep the medium dark and at 24–26°C, and maintain even moisture without standing water. After emergence, uncover immediately, provide bright light, lower the temperature to about 21–22°C and let the surface approach the dry side of moist between gentle waterings. Persistent wetness, cold media and overhead misting increase damping-off risk.

Plant at the plug depth into full sun after frost and once soil has warmed above 16°C. Leave enough room for mature growth and home-garden airflow, water at soil level during establishment, then water deeply only as the upper soil begins to dry. Support and routine pinching are unnecessary.

Ornamental seed safety: Do not eat seed or plant parts. Keep seed and plants away from children, pets and livestock, wash hands after handling and follow supplied treatment warnings. Seek medical or veterinary advice after suspected ingestion.

Ubuntuberg Seeds was founded by a horticulturist to provide high-quality horticultural seed to gardeners and professional growers throughout Southern Africa.