What is the difference between the culture formats you sell?

The common formats are liquid culture, agar plates, and grain spawn, and they suit different steps. Liquid culture is for injecting into grain and multiplying cheaply, agar is for keeping a strain pure and cleaning it up, and grain spawn is ready to mix into bulk substrate. Beginners often start with liquid culture or grain spawn, while agar suits growers who want to maintain strains. Each product page lists what it includes.