A ground hugging annual that grows best in full sun well drained areas.
Prefers to be grown on the dry side. High humidity, moisture and hot weather will cause root rot.
Soil & Site
average, well drained
Succumbs to the first frost.
single to double, range in size from 1-2 inches. large color pallet, close up on rainy or cloudy days
prostrate or ascending succulent plant with reddish well branches stems, moss-like appearance, hence the common name Moss Rose
6-12 inches tall, space plants 8-10 inches on center (2.25-1.45 plants per square foot)
Relatively maintenance free, may resseed.
I find direct seeding the small seeds into a small container, such as cell pacs and allowing them to reach transplanting size is easier than using a seed flat and transplanting the very small seedlings into the growing container. Allow about 4-5 weeks from seed to garden. Plant in the garden after the danger of frost.
Portulac comes from the latin words porto-to carry and lac-milk. Brazil
Notes & Reference
#28-Cottage Garden Annuals (Clive Lane), #40-Herbaceous Ornamental Plants (Steven Stills), #51-Armitage's Manual of Annuals, Biennials, and Half-Hardy Perennials (Alan Arimitage)