Ferocactus glaucescens inermisFerocactus glaucescens 'Inermis' Rare Spineless Blue Barrel Cactus. Unlike most barrel cacti, the 'Inermis' form is nearly or completely spineless, allowing its gorgeous blue gray skin to shine. Ferocactus glaucescens 'Inermis' is a rare form not commonly found in the wild, and even in cultivation, it's highly sought after by collectors. Full sun to partial shade brighter light enhances its blue tones. Requires excellent drainage (gritty, sandy, or

making it suitable for a wide range of climates

Tree roots in southwestern California are associated with mycorrhizae that aid in water uptake during the dry season

Hardy in USDA Zones 9 to 10

is a striking succulent characterized by its solitary

it grows up to 6 inches (15 cm) in height and width

it's a tall tree-like shrub with some cold tolerance (Zones 7-11)

it is highly drought-tolerant and requires minimal maintenance

long and with the growing of the plant they become greyish

at this height

or container displays

This small

Cereus aethiops is drought-tolerant and prefers minimal watering