Mountain Phlox Seeds | 500 seeds

Introduction

Mountain Phlox (Phlox subulata), also known as Creeping Phlox or Moss Phlox, is a low-growing perennial prized for its dense, carpet-like growth and masses of star-shaped flowers in early spring. Popular in U.S. gardens, Mountain Phlox is ideal for rock gardens, slopes, borders, and ground cover. When grown from seed, it establishes gradually and rewards gardeners with long-lasting seasonal color.

How to Grow Mountain Phlox Seeds

• Start Mountain Phlox seeds indoors 6–8 weeks before your last frost date, or direct sow outdoors in early spring or fall.

• Use a fine, well-draining seed-starting mix.

• Lightly press seeds onto the soil surface and cover very lightly, as seeds need light to germinate.

• Keep soil evenly moist until seedlings emerge.

• Maintain temperatures around 65–70°F for germination.

• Seeds typically germinate within 10–21 days.

• Provide bright light once seedlings appear.

• Transplant seedlings when they have 2–3 true leaves.

• Harden off plants before transplanting outdoors.

• Space plants 12–18 inches apart in full sun.

How to Care for Mountain Phlox Plants

• Water regularly during establishment; once established, plants are moderately drought tolerant.

• Grow in well-drained soil; Mountain Phlox does not tolerate wet or poorly drained conditions.

• Avoid heavy fertilization; overly rich soil can reduce flowering.

• Mountain Phlox thrives in cool to moderate temperatures and blooms best in early spring.

• Shear plants lightly after flowering to maintain a compact shape.

• Ensure good air circulation to prevent mildew.

• Plants spread slowly to form a dense ground cover over time.

• Mountain Phlox attracts bees and early-season pollinators.

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