84-91 Days to maturity. Portulaca grandiflora. Double Mix Portulaca Seeds. Non-GMO, annual. Double Mix portulaca seeds promise some of the most stunning, and most convenient succulents available to home gardeners. Portulaca Double Mix seeds grow 2" bushy rose-like blooms atop a compact dwarf succulent with a creeping spread ideal for hanging baskets, containers, rock gardens, or sprawled over a wall. Double Mix portulaca is easy to grow from seed and is known to thrive in poor soils and gardens prone to heat and drought. Portulaca Double Mix seeds promise neat and tidy succulents and are the perfect plant for front of a dryer border or edging walkways. About 238,000 seeds per oz.