Uebelmannia pectinifera ssp. flavispina

Scientific Name: Uebelmannia pectinifera ssp. flavispina Buining & Brederoo
Synonym: Uebelmannia flavispina
Family: Cactaceae

Recommended Temperature Zone:
USDA: 10b-12

Frost Tolerance: Keep above 40°F (4°C) in winter, avoid any frost

Heat Tolerance: Keep cool in summer

Sun Exposure: Light shade

Origin: Brazil (Minas Gerais: Diamantina)

Growth Habits: Solitary cactus, up to 5 inches wide (12 cm), 14 inches tall (35 cm); 20 to 29 prominent ribs; close set areoles; 1 to 4 central spines, up to 0.6 inch long (1.5 cm)

Watering Needs: Root prone if kept cold in winter, sometimes grafted to eliminate this problem

Propagation: Seeds

Although the juveniles are quite different, the adult form is very close in appearance to Uebelmannia pectinifera. The subspecies name flavispina comes from the Latin for "yellow spines".

Blooming Habits:
Yellow flowers in late autumn, or spring (the flower picture was taken in April at the Huntington Botanical Garden).