Sol Soils offers a variety of high-quality, gritty mix soils, soil amendments, and decorative soil toppers designed for the full spectrum of potted plants that may be in your collection. We select and hand-mix the best ingredients to produce fast draining soils that help protect against root rot, the number one killer of indoor plants. Bonsai Gritty Mix is our fastest draining and least water-retentive product, ensuring that the hardiest of dry-weather plants stay happy and healthy.  Containing pine bark as it's only organic component, the minimalist nature of Bonsai Gritty Mix is perfect for those who prefer a traditional bonsai mix or need a starting point for custom mixes of their own.