The Carnivorous Plant FAQ: About sand.
Q: About sand. Sands (foreground) Pinguicula corsica A: Sand is an important component of many carnivorous plant mixes. For example, adding sand to pure peat moss provides valuable aeration. There are different kinds of sand. The most useful are ones derived from quartz. Silica sand is a nice example. It is a finegrained sand used by sandblasters.