Mammolarias are great, small flowering cactus that are collection worthy. The albiflora variety will produce delicate white flowers when grown in the right conditions. They are very easy to grow, requiring watering only once approximately every 2 weeks. Give it good light and do not overwater.
Indoors: bright indirect light, very close to a window with good natural light
Outdoors: bright indirect light, such as a patio with protection from excessive direct sunlight
When the soil is completely dry, about once every 2 weeks. Do not overwater.
1/2 strength flowering fertilizer during active growing phases will help initiating and maintaining blooms
small: 10 cm nursery pot