Cactus and Succulents - Part Sun

Medium sized solitary plants, pyramidal stems; long radial spines

M. celsiana

Usually solitary, globose to 6″. Variable spines. Carmine red flowers.

Solitary, cylindrical, to 4″d./6″h.; short twisted spines

Slow branching; to 6″ cylindrical; woolly between spines

12″h. clumps develop as stems divide

Green stems to 6″, variable spines; generally solitary

Green stems to 6″, generally solitary. Purple flowers. Thin yellow-brown spines.

M. calacantha

Slowly clumping, 4″ dia., 12″ tall

Occasionally branches; 4″d./12″h.; long curved yellow/brown spines. Blooms spring to fall with flowers that are a deep-pink to a purple color.

Small stems 2″ across x 4″ tall will form large clusters. Soft spines splay outwards. Creamy yellow flowers in summer and fall. Regular water in summer, keep dry in winter.

6″ round stems with lots of very white spines, with longer hooked spines. Large red flowers.

Small clumps of fast-growing cylindrical branches to 4″h. Purple-pink tubular blooms

Cylindrical stems 2″ around, can grow up to 20″ long. Short spines, some bristles. Small yellow flowers.

Cylindrical stems 2″ around to 20″ long, some bristles. Lots of red spines along the crown of the plant.

Cylindrical stems 2″ around to 20″ long, some bristles

Small stems, 1/2″ diameter, to 4″ long, with hooked spines. Forms large clusters readily. Pink flowers.

Mammillaria gracilis

Small, very branchy to 6″; yellow flowers

8″ dia., pyramidal tubercles, 1-2″ spines

Grows in rocky limestone hillside slopes. Globose stems covered in short white spines, as many as 100 radial spines. Yellow flowers. Will slowly form small clusters.