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Koshiro Sunflower Portulaca Seeds - Vibrant Grandiflora Flowers for Garden & Containers

Koshiro Sunflower Portulaca Seeds - Vibrant Grandiflora Flowers for Garden & Containers

$5.99 USD
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Name: Koshiro Sunflower Portulaca Seeds - Vibrant Grandiflora Flowers for Garden & Containers
Quantity: 50pcs, 100pcs, 200pcs, 500pcs
Latin Name: Portulaca grandiflora
Days to Germination: 7-14 days
Sowing: Sow seeds directly outdoors after the last frost or start indoors 6-8 weeks before transplanting. Surface sow, as seeds need light to germinate.
Light Preference: Full sun (at least 6-8 hours of direct sunlight daily)
Plant Height: 4-8 inches (10-20 cm)
Plant Spacing: 6-12 inches (15-30 cm) apart
Planting Zones: USDA Zones 5-11 (annual in cooler zones, perennial in warmer regions)
Harvest: Blooms appear 8-10 weeks after sowing; deadhead to encourage continuous flowering.
Soil Requirements: Well-drained, sandy or loamy soil; tolerates poor soil. pH: 5.5-7.0. Drought-tolerant once established.
Uses: Ground cover, containers, hanging baskets, rock gardens, borders, drought-resistant landscaping.

Planting Steps:

  • 1. Prepare well-draining soil.
  • 2. Scatter seeds on the surface (do not cover).
  • 3. Lightly press into soil and mist to keep moist.
  • 4. Keep at 70-85°F (21-29°C) for optimal germination.
  • 5. Thin seedlings if overcrowded.
  • 6. Water sparingly once established (overwatering may cause rot).
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