• White Vinca Flowers Growing in Cottage Garden
  • White Catharanthus flowers blooming in a garden
  • White Vinca Flowers Growing in Cottage Garden
  • White Vinca Flowers Growing in Cottage Garden
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EdenValleySeeds

White Catharanthus Flower Seeds for Planting – Heirloom Non-GMO Wildflower Garden Seeds

White Catharanthus Flower Seeds for Planting – Heirloom Non-GMO Wildflower Garden Seeds

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$18.89 USD
$18.89 USD
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Oct 23 – Oct 25 Estimated arrival
ORDER Oct 13 Order placed
ORDER READY Oct 15 – Oct 16 2–3 business days
DELIVERED Oct 23 – Oct 25 10–12 business days total
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White Catharanthus Flower Seeds for Planting – Heirloom Non-GMO Wildflower Garden Seeds

Pure White Blooms for a Sunny, Carefree Garden

Short Product Description

Grow White Catharanthus from heirloom non-GMO seeds for charming white flowers and glossy green foliage. A warm-season favorite for flower beds, borders, containers, cottage gardens, and sunny landscape displays.

Key Features

  • Produces attractive white flowers against glossy green foliage.
  • Heirloom, non-GMO flower seed choice for home gardeners.
  • Heat-loving plants perform well in warm sunny locations.
  • Ideal for flower beds, borders, containers, and cottage gardens.
  • Tolerates periods of dry soil once plants are established.
  • Provides a long-lasting summer display in suitable climates.

Growing Benefits

  • Adds clean white color to sunny garden spaces.
  • Creates cheerful summer interest with compact flowering growth.
  • Performs well in warm conditions and seasonal heat.
  • Works beautifully in borders, containers, and mixed flower beds.
  • Offers a practical choice for low-water garden areas.

Seed Specifications

  • Common Name: Madagascar Periwinkle, Vinca
  • Botanical Name: Catharanthus roseus
  • Plant Type: Tender perennial, commonly grown as an annual
  • Flower Color: White
  • Flower Shape: Five-petaled, rounded flowers
  • Foliage: Glossy, oval green leaves
  • Growth Habit: Upright, branching, or mounding
  • Height: Approximately 8–18 inches
  • Sunlight: Full sun to partial shade
  • Soil: Loose, fertile, well-drained soil
  • Water: Moderate; allow the soil to dry slightly between waterings once established
  • Germination Time: Approximately 7–21 days under favorable conditions
  • Sowing Depth: Approximately ¼ inch
  • Spacing: Approximately 8–12 inches
  • Growing Zones: USDA Zones 10–11 as a perennial; commonly grown as an annual in cooler zones
  • Flowering/Maturity: Typically blooms from late spring or summer through fall under suitable conditions
  • Uses: Flower beds, borders, containers, cottage gardens, warm-climate landscapes, and seasonal ornamental displays

Growing Tips

  • Start seeds indoors several weeks before the last expected frost in cooler regions.
  • Provide warm soil and bright light during germination.
  • Transplant outdoors only after frost danger has passed.
  • Avoid overwatering and choose a location with excellent drainage.

Seed Storage

Store unused seeds in a cool, dry, dark location. Keep them sealed in their original packet or an airtight container away from moisture, heat, and direct sunlight.

Important Growing Note

Catharanthus roseus is commonly known as Madagascar periwinkle or annual vinca. It is a tropical/subtropical perennial but is generally grown as a warm-season annual in areas with frost. Although it can tolerate dry conditions once established, good drainage is essential and newly planted seedlings need regular moisture.

Unique Facts About Seeds

  • Catharanthus roseus is native to Madagascar and is now widely cultivated as an ornamental plant.
  • Its glossy foliage helps distinguish it from many soft-leaved annual bedding plants.
  • The flowers have five rounded petals arranged around a contrasting central eye in many forms.
  • Plants are especially valued for their ability to continue flowering during warm summer conditions.
  • White-flowering forms provide a versatile neutral color for mixed garden displays.

Growing Instructions

Planting Season: Start seeds indoors several weeks before the last expected spring frost. In warm, frost-free climates, seeds can be sown outdoors after suitable soil temperatures are reached.

Sowing: Fill seed trays or small containers with a quality seed-starting mix. Sow seeds and cover lightly with growing medium.

Depth: Plant seeds approximately ¼ inch deep.

Spacing: Transplant seedlings approximately 8–12 inches apart to provide adequate room for branching growth.

Sunlight: Provide full sun for the best flowering. Partial shade can be tolerated, particularly in very hot climates.

Soil: Use fertile, loose, well-drained soil. Avoid heavy soil that holds excessive moisture.

Watering: Keep the soil lightly moist during germination and early growth. Once established, allow the upper soil to dry slightly between waterings.

Germination: Seeds commonly germinate within approximately 7–21 days under warm, favorable conditions. Consistent warmth and moisture help support even emergence.

Transplanting: Harden seedlings gradually before planting outdoors. Transplant after frost danger has passed and nighttime temperatures are reliably warm.

Fertilizing: Apply a balanced flower fertilizer according to soil needs during active growth. Avoid excessive nitrogen, which can promote foliage at the expense of flowers.

Care: Keep weeds controlled around young plants and provide good airflow. Remove spent flowers or damaged foliage when needed to maintain a neat appearance.

Flowering/Maturity: White flowers typically develop from late spring or summer through fall when plants receive adequate warmth and sunlight.

Winter Care: Catharanthus is frost-sensitive. In cooler climates, grow it as an annual or bring container plants indoors before freezing temperatures arrive.