Portulaca - Seeds

Height: 8 to 20 inches ( 20 to 50 cm).
Growing Region: Zones 2 to 10.
Flowers: Summer and autumn.
Flower Details: Yellow, gold, orange, red, white, pink. Cup-shaped. Single or double flowers.
Foliage: Fleshy. Obovate. Oblong.

Sow Outdoors: Surface. Following the last frost. Spacing 4 to 24 inches (10 to 60 cm).

Sow Indoors: Mix seeds in a growing medium, place in a freezer bag, keep moist, then stratify by refrigeration for two to three weeks. Use peat pots. Germination time: one to three weeks in the light. Temperature 75°F (24°C). Seven or eight weeks in advance. Transplant outdoors in the last month of spring.

Requirements: Full sunlight. Soil pH 5.5 to 7. Poor soil. Sandy soil. Light poor soils. May become weedy in warm areas, remove plants before they set seed.

How to grow:
The seeds of Purslane and other Portulaca members should be sown on the soil surface following the last frost of spring. Ideally Purslane should be grown in a sunny part of the garden and Portulaca genus members thrive in hot areas. The soil that Purslane grows in should be sandy and poor with a pH of 5.5 to 7. 
If starting Purslane indoors then start about one and a half months in advance. You first need to imbibe Purslane seeds by placing within soil in a plastic bag and placing in the fridge for about 15 days. Once finished, place the soil /seeds in light and germinate at 21 to 30 degrees Centigrade. It typically takes about one to three weeks for Purslane seeds to germinate. Once ready transfer into the garden at from 14 to 60 cm apart (depending on the size of the Portulaca species). This should be done towards the end of spring.