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Moss Rose

Portulaca grandiflora. Perhaps Moss Roses get their name from their low-growing habit and old-fashioned, rose-like flowers. Overwatering is the only thing that makes them unhappy, and fertilizing produces more foliage but fewer flowers. Seeds are best direct-sown after the last spring frost date and left uncovered as light aids germination. If sowing indoors, start them 6 to 8 weeks ahead. Transplant them gently into the garden to minimize root disturbance. Moss Roses prefers sandy, well-draining soil and full sun. Deer resistant. Annual. Summer-flowering. Height: 3" to 6".

Average seed life: 2 to 3 years.

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Gardening Tips

Moss Rose Sowing Instructions
Planting Depth
:0”
Seed Spacing:6”-8”
Plant Spacing:12”-24”
Days to Germination:10-15 days
Germination Temperature:55°-60°F

Portulaca grandiflora. Easy to grow, Moss Roses prefer to be direct-sown in full to partial sunlight in a sandy, well-draining spot in the garden after the last frost date, by just pressing the seeds lightly into the soil, as light is needed for germination. Or raise as transplants 6 to 8 weeks before transplanting out after threat of frost has passed. Use individual peat pots or seed-starting cells to avoid root disturbance. Provide even moisture and strong light. Harden off the seedlings by gradually acclimating them to the outdoors over 1 to 2 weeks before transplanting out. Once seedlings are 2" tall, thin or transplant 12" to 24" apart. Moss Roses, when established, love heat, blazing sun, and dry soil, making them perfect for sun-baked patio containers. Summer flowering. Height: 3" to 6".