From Durango Mexico, Mammillaria guelzowiana is a sometimes clumping cylindrical cactus to 6 inches tall and 3 inches across. Which makes this one pretty much full grown. It has some of the largest magenta flowers of all the Mammillarias at nearly 3 inches in diameter. They come in flushes of several at a time in late spring.
     This came from B&B Cactus Farm loaded with buds. It didn't quit flowering till late June. I removed 15 dead flower buds when it was done.

First flower I got to see	A second a few days later	And on and on	Finally the last batch