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Portulaca Double Flower Mix Seeds produce mostly double flowers in a range of bright colours. The annual thrives in sunny, dry locations for an easy-care summer display.
Grow it successfully: Read the Double Flower Mix section.
Quick Grow Facts
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Plant Type: Annual
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Scientific Name: Portulaca grandiflora
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Seed Form: Raw seed
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Pretreatment: None; do not soak or chill the tiny seed
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General Sowing Time: Spring/Summer, after frost and once conditions are warm
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Position: Full Sun
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Sow Depth: Surface sow and press into the mix; do not bury. The packet's 1 mm is the maximum placement depth, not an instruction for an opaque cover
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Germination Light: Bright light is beneficial; keep the seed visible at the surface
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Germination Temperature: 22–26°C
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Germination: Allow the packet window of 7–14 days
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Spacing: 20 × 20 cm for a dense display; allow about 25 cm where airflow matters
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Height: About 15 cm
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Spread: About 25 cm
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Growth Form: Low, spreading succulent annual
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Flower Size: 2.5–5 cm
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Seed Quantity: 2 g raw seed: approximately 21 978 seeds; 20 g raw seed: approximately 219 780 seeds
Why Grow This Variety
- Mostly double flowers measure 2.5-5 cm across.
- Heat and drought tolerance suit hot, full-sun positions.
- A mix of colours creates a varied garden display.
- Low-maintenance plants need minimal care once established.
Garden Uses
Use Double Flower Mix in rock gardens, containers, hanging baskets, front borders or drought-resistant landscapes.
Growing Notes
- Surface sow in clean, fine, freely draining mix and press gently; never bury the tiny seed.
- Keep at 22–26°C in bright light and evenly moist but never saturated until emergence.
- Pot on only when roots hold the plug together, harden gradually and plant out after frost.
- Give full sun and let established plants dry slightly between deep waterings.
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