![Image](http://moonworm.net/cactus/images/cactuspics/cactus-mammillaria-prolifera-20200202a.jpg)
![Image](http://moonworm.net/cactus/images/cactuspics/cactus-mammillaria-prolifera-20200202b.jpg)
![Image](http://moonworm.net/cactus/images/cactuspics/cactus-mammillaria-prolifera-20200202c.jpg)
Thank you, I sowed the seed about three years ago and there's ten plants in this pot so I'll probably do some thinning this summer.
Hi, I'm not entirely certain. I sowed it from a mixed seed packet that I bought at cactusstore.com a few years ago. Your guess would be better than mine.