Portulaca Sundial Mix flowers in vivid shades of pink, yellow, orange, and white, a drought-tolerant moss rose blend perfect for full-sun summer gardens

Portulaca Seeds ‘Sundial Mix’ – Dazzling Moss Rose for Sun-Loving Gardens

A Garden Favorite for Endless Summer Color

If you’re looking for a low-maintenance flower that thrives in the hottest, driest conditions, Portulaca Seeds ‘Sundial Mix’ are the perfect choice. Also known as Moss Rose (Portulaca grandiflora), this sun-loving annual delivers a nonstop burst of color from early summer through frost.

Each bloom in the Sundial Mix series opens fully in the morning and closes gently in the evening—tracking the sun throughout the day. The mix includes brilliant shades of rose, gold, fuchsia, orange, white, and peppermint, making it a show-stopping addition to containers, hanging baskets, or garden borders.

You can find Portulaca Sundial Mix seed packs here:
👉 Portulaca Seeds ‘Sundial Mix’ (50 Multi-Pelleted Seeds)

Smaller home garden packs are available here:
🌸 Smaller Seed Packs

Why Grow Portulaca Sundial Mix

Few flowering plants can match Portulaca’s combination of beauty, toughness, and reliability. The Sundial Mix is prized by professional growers and home gardeners alike for these reasons:

  • 🌞 Thrives in Full Sun: Loves 10–12 hours of light daily.

  • 💧 Drought Tolerant: Perfect for dry or sandy soil.

  • 🌸 Vivid Color Variety: A blend of bright, cheerful hues.

  • 🌿 Compact Growth: Excellent for edging and rock gardens.

  • 🪴 Low Maintenance: Once established, requires very little care.

At Garden Starts Nursery, we start Sundial Mix seeds in 288-cell trays using a vacuum seeder for uniform coverage. The multi-pelleted seeds make sowing easy and ensure consistent spacing in each cell. We maintain about 72°F with strong light during germination and transplant to 4-inch pots or baskets once seedlings develop a sturdy root system.

How to Start Portulaca Seeds Indoors

Portulaca seeds are extremely small and light-sensitive, so they should not be covered with soil. Here’s a step-by-step guide:

  1. Start 6–8 weeks before last frost.

  2. Fill trays or pots with a well-draining seed-starting mix.

  3. Press seeds gently into the surface—do not bury them.

  4. Mist lightly to keep moist but not saturated.

  5. Provide 10–12 hours of light daily using grow lights or a sunny window.

  6. Maintain 70–75°F soil temperature for best germination.

  7. Expect sprouts in 8–18 days.

For detailed instructions and troubleshooting tips, read our full guide here:
📖 Starting Portulaca Seeds – Everything You Need to Know About Growing Moss Rose

Transplanting and Growing On

Once seedlings have 3–4 true leaves and the weather is warm, transplant them outdoors into full sun. Portulaca thrives in poor, sandy, or rocky soil, making it perfect for spots where other flowers struggle.

  • Spacing: 6–8 inches apart.

  • Height: 4–6 inches tall, spreading 10–12 inches wide.

  • Soil: Well-drained and lean (avoid heavy clay or overly rich soil).

  • Watering: Allow the soil to dry between waterings.

Once established, Portulaca Sundial Mix will produce masses of bright blooms that attract butterflies and pollinators all summer long.

Design Ideas and Landscape Uses

The Sundial Mix works beautifully in a variety of settings:

  • Hanging baskets – Trailing habit spills over the edges.

  • Rock gardens – Perfect for hot, dry slopes or gravel beds.

  • Borders and edging – Adds a solid line of color along pathways.

  • Containers – Combines well with vinca, calibrachoa, or dusty miller.

For professional growers, Portulaca Sundial Mix is a profitable bedding crop—uniform, early-blooming, and easy to maintain in greenhouses or outdoor displays.

Tips from the Greenhouse

At Trailing Petunia’s Garden Starts Nursery, we’ve found Portulaca performs best when:

  • Sown on top of the soil surface for maximum light exposure.

  • Bottom-watered to prevent damping-off.

  • Given direct light immediately after germination.

  • Kept slightly dry between irrigations once established.

With minimal care, the plants form lush mats of foliage and bright double blooms that thrive all summer—even in scorching heat.

Where to Buy Portulaca Seeds

🌸 Retail Seed Packs: https://www.trailingpetunia.com/collections
🌼 Bulk Seed Packs for Growers: https://www.trailingpetuniabulkseeds.com/

Whether you’re planting a few patio containers or filling flats for wholesale, Portulaca Seeds ‘Sundial Mix’ will bring consistent performance and a splash of color that lasts from early summer through the first frost.

Key Growing Facts

  • Germination: 8–18 days

  • Light Requirement: 10–12 hours

  • Temperature: 70–75°F

  • Bloom Time: Summer to frost

  • Spacing: 6–8 inches apart

  • Uses: Hanging baskets, borders, containers, rock gardens

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