Usually solitary, some clumps; to 10″h.; woolly between short central spines
Cactus and Succulents - Every 3 Week
Mammillaria compressa
Slow to form large clusters. Variable spines. Lots of bright pink flowers.
Mammillaria cv. “Fred”
Mammillaria bocasana fa. monstrose “Fred”
Small multi-stemmed globose monstrose cactus with few spines and none of the hairs of the species. Rot prone, keep dry in winter.
Mammillaria decipiens ssp. camptotricha
4″. Dense clusters of deep green globose stems. Wild spines, creamy flowers.
Mammillaria elongata
Long stems, 1″ diameter, clumping; tight star-shape spines. Small cream-colored flowers form a crown around the tips of the stems.
Mammillaria elongata var. rubrispina
Cultivar with red spines. Small cream-colored flowers form a crown around the tips of the stems.
Mammillaria elongata “Gold Nugget”
Lots of short golden stems, tightly clumping. Small cream-colored flowers form a crown around the tips of the stems.
Mammillaria geminispina
Large clumps of 3″d. x 7-8″ long stems.
Mammillaria glassii
Small, 4″ cylindrical stems, will form larger multistem clusters. Light pink flowers.
Mammillaria haageana
Usually solitary, 4-6″
Mammillaria hahniana
Stems cylindrical to 4″ diameter. Wooly between tubercules. Sometimes has longer radial spines. Species is variable, and there are 4 subspecies. Flowers rose-pink to red. Will form large clumps over time. Frost resistant if dry in winter.
Mammillaria hernandezii
Small solitary green globular plant to 2″
Mammillaria heyderi
Very cold hardy. Small ball cactus to 5″d.
Mammillaria kraehenbuehlii
Low dense clusters get covered with fine white hairs
Mammillaria lasiacantha
Mini grey-green globular plant covered w/soft white spines. Readily clumping
Mammillaria lindsayi
M. standleyi
Slow to form clumps, 3 to 4 ft across. Globose stems to 6″. Prominent conical tubercles. Yellowish flowers.
Mammillaria longimamma
Pronounced green tubercles. Usually solitary, to 6″d.
Mammillaria magnimamma var. krameri
Pronounced green tubercles. Thickened recurved spines. Candy-striped white and red flowers. 6 to 12″ across.
Mammillaria mammillaris
8″d. Clumping w/prominent tubercles, some axil wool
Mammillaria mazatlanensis
Generally forms clumps, to 2″d./6″h.; tubular red flowers
Mammillaria melanocentra
Medium sized solitary plants, pyramidal stems; long radial spines
Mammillaria microhelia
Generally clumping, narrow stems to 6″ tall. Variable spination.
Mammillaria muehlenpfordtii
M. celsiana
Usually solitary, globose to 6″. Variable spines. Carmine red flowers.
Mammillaria mystax
Solitary, cylindrical, to 4″d./6″h.; short twisted spines
Mammillaria nivosa
Clusters of 4″ stems. Dark brown spines, yellow flowers
Mammillaria parkinsonii
Slow branching; to 6″ cylindrical; woolly between spines
Mammillaria perbella
12″h. clumps develop as stems divide
Mammillaria plumosa
Globular plants to 3″d. in dense clusters; covered in white feathery spines
Mammillaria polythele
Variable erect stems to 24″ high. Dark reddish-brown spines, prominent tubercules with woolly axils. Pink flowers. Generally solitary. Frost sensitive – protect from hard frosts.
Mammillaria prolifera
Large clusters of small stems with cream colored flowers and bright red fruit.