Columbian Rust Spore Syringe

As the name indicates, the origins of the Columbian Rust mushrooms can be traced back to Colombia. It is a mutated P. cubensis strain. The Columbian Rust is large with unusual brownish red spores instead of the standard dark purplish-black spore hue. The caps are about 20-50 mm in size, and the stems measure 40 -100 mm. Handle these with care because when touched, they develop greenish-blue bruising. Beginners to mushroom growing should consider the Columbian Rust because they can grow in PF Tek and BRF, rye grain, or straw and dung. The potency level is usually average to high. The growth time does take slightly longer than other P. cubensis strains, but they are definitely worth the wait.