Aglaonema Pictum Tricolor thrives in well-draining soil that is rich in organic matter. A soil mixture that consists of a 1:1 ratio of peat moss and perlite or a mix of peat moss, coco coir, and perlite with added compost or worm castings is ideal. The soil mixture should be slightly acidic with a pH between 6.0 and 6.5. It is essential to ensure that the soil is moist, but not waterlogged as too much water can cause root rot.