Portulaca

Scientific Name: Portulaca grandiflora

USDA Hardiness Zones: N/A (Annual)

Approximate number of seeds per kilogram (pound) : 8,360,000 (3,800,000)

Sun: full sun

Water: keep soil moderately moist during germination, do not overwater.

Soil: surface soil as Portulaca requires light to germinate, use light, sandy, slightly acidic, well-draining soil

Temperature: 24 to 27 degrees Celsius (75 to 80 degrees Fahrenheit)

Spacing: space 2 inches apart, thinning to 12 inches after germination

Germination Time: 10 to 14 days

Portulaca is also known as the moss rose.  It is an excellent rock garden and container plant that withstand dry conditions and poor soil conditions.  Sow inside in cooler climates, transferring outside after the danger of frost has passed.