Moss Rose (Portulaca Grandiflora Happy Hour Tropical Mix) - This variety produces tidy, mounded plants with uniform flowers in vivid colors. These tropical Portulaca flowers nearly glow on top the green, succulent foliage! Moss Rose works well as a ground cover plant, growing 8 - 10 inches tall and spreading 10 - 12 in width. It fills in those areas of the garden that are troublesome as it is a very tolerant plant. This moss rose mix thrives in sunny hot locations where the soil is poor. When it is thriving, it produces lots of bold color with semi-double blooms that is certain to catch attention. There are very few plants that can spread like Moss Rose ground cover in such hot, dry locations. Sow Moss Rose ground cover seed in starter trays or individual pots 6 - 8 weeks before end of frost season. Press the Moss Rose seeds into the soil but do not cover. The ground cover seed needs light to germinate. Transplant the orange Moss Rose seedlings into the garden 12 inches apart. Portulaca seeds can also be directly sown in prepared soil outdoors after all danger of frost. Portulaca Moss Rose ground cover plants tolerate heat and drought, but they do look best with occasional watering. Moss Rose plant care includes cutting back the plants during the summer to help them stay neat and to extend their blooms into fall.