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key growing information
How to Grow Portulaca From Seed
How to grow portulaca (moss rose) from seed: timing by cell size, light for germination, growing temperatures, direct sowing in warm soil, spacing, soil and uses.
By Hensley’s Seed Co.
Portulaca - Key Growing Information
DAYS TO GERMINATION:
Seedlings appear in 3–5 days at 71–79°F (22–26°C).
SOWING:
Transplants are recommended: sow 4–6 weeks before planting out for 128- to 288-cell trays, or 6–8 weeks for bigger cells or pots. Dust a thin layer of vermiculite over the seed to hold it in place without fully covering it, since it needs light to germinate, and keep the surface moist. After germination, grow at about 65–76°F (18–24°C) on average. Harden off and plant out after frost danger is past. To sow in place, wait until the soil reaches 75°F (24°C) or warmer. Deadheading isn't necessary but keeps plants healthier and flowering more.
LIGHT PREFERENCE:
Full sun.
PLANT HEIGHT:
Grows about 5–9" tall.
PLANT SPACING:
8–12" apart in beds, or 3 plants per 10–12" container.
HARDINESS ZONES:
Grown as an annual.
SOIL REQUIREMENTS:
Average soil with good drainage. Handles poor, dry soil and heat well; don't overwater.
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