Free Pachysandra . For greatest success, pachysandra should be planted at six inch spacing, or four plants. sammy's pachysandra offers you the highest quality plants, the largest variety of pachysandra for the best possible price. Pachysandra terminalis 'Silver Edge' (3.5" Pot) Little Prince To Go from littleprinceplants.com However, ensure that you locate a planting spot under a gathering of trees to provide as much shade. There are several varieties of pachysandra available to choose from. Pachysandra terminalis, the japanese pachysandra, carpet box or japanese spurge, is a species of flowering plant in the boxwood family buxaceae, native to japan, korea and china and introduced to eastern north america.