Foxfarm 12 Qt. Ready-to-Use Happy Frog Potting Soil. This nutrient-rich and fine-screened soil has a light texture and is well aerated, providing optimal conditions for container plantings. pH adjusted for optimum results, it contains beneficial microbes that help break down organic matter and feed plant roots. Alive with earthworm castings, bat guano, and composted forest humus, this soil is ideal for containers, pots, raised beds, and amending native soil.