Romneya Coulteri Flower Seeds For Planting, Growing Stunning White Poppies for Your Garden

Romneya Coulteri Flower Seeds – Grow Stunning White Matilija Poppies

Brighten Your Garden with Majestic, Large White Blooms

The Romneya coulteri, commonly known as the Matilija Poppy or California Tree Poppy, is a striking perennial known for its large, crinkled white petals and bright yellow centers. These beautiful poppies create a dramatic effect in gardens with their tall growth, drought tolerance, and long-lasting blooms. Perfect for xeriscaping, borders, and pollinator-friendly gardens, this low-maintenance plant thrives in warm, sunny climates.

Key Features:

• Botanical Name: Romneya coulteri
• Common Name: Matilija Poppy, California Tree Poppy
• Plant Type: Perennial
• Mature Height: 4-8 feet
• Bloom Size: 6-8 inches wide
• Light Requirements: Full sun (6+ hours of direct sunlight daily)
• Soil Requirements: Well-drained, sandy or loamy soil (pH 6.0-7.5)
• Watering Needs: Low once established; drought-tolerant
• Climate Suitability: Best for warm, dry regions (USDA Zones 7-10)
• Uses: Ideal for pollinator gardens, borders, slopes, and dry landscapes

Planting & Growing Guide

When to Plant:

• Best sown in fall or early spring for optimal germination

Seed Preparation:

• Stratification Required: Yes, for improved germination
• Cold Stratification Steps:
  • Mix seeds with moist sand and store in the refrigerator for 4-6 weeks before planting

Sowing Instructions:

• Planting Depth: Lightly press seeds into soil; do not bury deeply
• Spacing: 18-24 inches apart for mature growth
• Temperature: Maintain 60-75°F (16-24°C) for germination
• Watering: Keep soil moist but not waterlogged during germination

Germination & Growth:

• Germination Time: 3-6 weeks under optimal conditions
• Transplanting: Once seedlings are 4-6 inches tall, move to their permanent location

Care & Maintenance:

• Watering: Water regularly while young; reduce once established
• Fertilization: Apply a low-nitrogen fertilizer in early spring
• Pruning: Cut back spent flower stalks in late fall or early spring
• Mulching: Use mulch to retain moisture and suppress weeds
• Pest & Disease Resistance: Highly resistant to pests and diseases

Benefits & Enjoyment:

• Attracts Pollinators: Loved by bees and butterflies
• Drought Tolerant: Ideal for water-wise gardening
• Long-Lasting Blooms: Spring to early summer flowering season
• Low Maintenance & Deer Resistant

Grow the Romneya coulteri for a bold, elegant addition to your landscape. Its large, showy blooms and hardy nature make it a standout feature in any garden.