(This plant comes in a 3.5" pot. You will receive a very similar plant to the one in the picture. It may or may not be blooming at the time of your purchase. The plant is shipped in its pot to prevent any damage to the roots).
This cactus has central spines that are about 60-80 mm long, yellow/white or pink flowers that are about 40-70 mm wide.
Recommended temperature zone: USDA: 9-11
Sun exposure: Light shade
Origin: Mexico (Coahuila and Nuevo Leon)
Watering needs: Moderate water
Blooming habits: Pink flower, 4" in diameter (10 cm).
Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz