Indigo

This small cactus grows up to 9 feet (2.7 meters) tall. It splits at the base to form 2 tapering stems. Each stem is orange-yellow, and is covered in brittle bright green spines. The spherical body is lime green, and is covered in hundreds of fine, light brown, hair-like spines.

It is very fast growing, taking 5 months to reach maturity. Once mature, a handful of flowers, with petals that are indigo in the center, beige in the middle and blood red at the edges, grow at the top, reappearing once every 5 years. The flower head is largely flat with many raised round-tipped petals. It has a weak scent that smells like citrus.

The cactus's skin is nearly impenetrable, the purple flesh is smooth, and the subtle blue sap is thin.