QAUZUY GARDEN Mixed Moss Rose Seeds 1000 Seeds ‘Portulaca Grandiflora’ Flowers for Bonsai Garden Balcony Heat Drought Tolerant Fast-Growing Ground Cover Low-Maintenance. Moss rose plants are a popular choice for growing in container gardens, along the front edge of garden bed borders, as edging along paved walkways, on top of stone walls, and in rock gardens.