seed starting, a "germination mix" is typically light-weight and suitable for starting small-seeded plants. A "seed starting" mix is suitable for larger seeded crops. Following early growth, most plants prefer a potting mix that is more well-draining.

Cacti and succulents require sharp drainage, thus requiring a much larger percentage of perlite or sand. Carnivorous plants, such as the Venus flytrap and the pitcher plant, prefer the nutrient-poor, acidic