Linanthus Grandiflorus 100 Seeds – Mountain Phlox Blue Purple Annual Wildflower

Linanthus grandiflorus, commonly known as Mountain Phlox, is a charming annual wildflower prized for its profusion of delicate blue-purple blooms. Native to California, this species brings a soft, naturalistic beauty to meadows, wildflower gardens, and pollinator plantings. Its slender stems and airy habit allow it to weave gracefully among other annuals and perennials, creating a relaxed, cottage-garden feel.

Mountain Phlox is an excellent choice for gardeners seeking an easy-to-grow annual that supports bees, butterflies, and other beneficial insects. The flowers appear in late spring and continue through summer, providing weeks of color in borders, rock gardens, and container plantings. Its tolerance for poor to average soil makes it a versatile addition to water-wise landscapes.

Plant Features

• Produces abundant blue-purple flowers on slender, branching stems
• Annual wildflower native to California and the western United States
• Attracts bees, butterflies, and other pollinators
• Works well in meadow plantings, borders, and containers
• Tolerates poor to average soil and low-water conditions once established

Growing Information

• Botanical Name: Linanthus grandiflorus
• Plant Type: Annual wildflower
• Sunlight: Full sun to partial shade
• Soil: Well-drained, sandy or loamy soil; tolerates poor soil
• Water Requirements: Low to moderate; allow soil to dry slightly between waterings
• Growth Habit: Upright, branching, airy
• Bloom Season: Late spring to summer
• Mature Height: 12–24 inches
• Spacing: 9–12 inches apart

Planting & Care

Sow Mountain Phlox seeds directly in the garden in early spring or fall, as light is needed for germination. Scatter seeds on the soil surface and press them gently into the ground; do not cover deeply. Keep the soil consistently moist until seedlings emerge, which typically occurs within 7–21 days. Thin seedlings to the recommended spacing to encourage healthy growth and airflow.

Once established, Linanthus grandiflorus requires minimal care. Water during extended dry periods, but avoid overwatering. Deadhead spent flowers to prolong bloom time and prevent self-seeding if desired. This annual wildflower is well-suited for low-maintenance landscapes and pollinator gardens.

What's Included

100 Linanthus grandiflorus seeds (Mountain Phlox).