Outsidepride Purslane Plant Herb Seed - 10000 Seeds Purslane is an edible herb grown as an annual in USDA zones 3 - 10. Only reaching 6 - 10 inches tall, this portulaca will grow a yellow flower. Purslane is a succulent, sprawling, annual plant that you can see growing in lawns and meadows. It has an upright growth habit with juicy, succulent oval leaves and mild sweet-sour flavor. Plants will re-grow after cutting. The leaves and stems are great raw in salads. You can steam them or add them to soups, stews, and other vegetable dishes. Sow 25 purlane seeds to get a nice full plant in your herb garden.