Members of the Portulaca genus are hardy or half hardy annuals that reach from 15 to 45 cm in height.. Portulaca plants carry succulent leaves and bloom from summer to the second half of autumn and carry cup shaped flowers… How to Grow Portulaca Plants Gardener's HQ Guide to Growing Purslane, Moss Rose and Wax pink. Seeds are available at some nurseries and in seed … Needs light to germinate. The species has no freeze tolerance, but excels in the hottest weather. Perhaps its time we Americans got on board and started including Purslane … Portulaca grandiflora, also called moss rose, tends to self-seed, but harvesting seeds from this annual plant helps keep it where you want it.Moss rose quickly spreads in full-sun, dry areas when seed capsules are left on the plant. Growing 4 to 8 inches tall and 6 to 24 inches wide, moss rose varieties include the early-flowering … Oregon Tilth Certified Organic Seed Plant Portulaca Seeds: Sow portulaca seed in cell packs or individual pots, 6-8 weeks prior to transplant. Sporting one-inch flowers in a rainbow of colors, from scarlet to purple, yellow or pink, flowering purslane is native to Brazil and can grow to 6 inches tall, with the flowers appearing atop its trailing stems, which can spread over 1 foot from the plant’s base. Highest vegetable source for omega-3 fatty acids, well-documented for beneficial cardiovascular and cholesterol controlling effects. Grow Heirloom Herbs - Plant Purslane Seeds. Press seed into soil, do not cover. Chickens grazing on purslane produce high omega-3 eggs. Seeds Per Packet: 1,500 Seeds Per Ounce: 65,000. Kept at 75-80°F., germination is in 7-14 … Purslane actually contains a huge amount of omega-3s and is an excellent source of vitamins and minerals. An annual succulent, Purslane is regularly consumed in salads, stir-fry and soups across Europe and Asia.