Oddball cactus with long, exaggerated tubercles that look like leaves (thus the common name agave cactus). From the Chihuahuan Desert, with a substantial taproot. Tubercles may grow to about 4-5 inches long, each bearing weak spines at its tip. Those spines are significantly longer in strong light. Tubercles turn bright red when stressed (by drought or root loss, for example).

Flowers are large, fragrant, and yellow. Widespread but uncommon in habitat and uncommon in cultivation. A staple of botanical gardens. Slow growing. Allow extra space in containers for the tap root. Best form with strong light. Provide excellent drainage and do not overwater.

Found in 6 different states in north-central Mexico. Apparently associated with Ferocactus; intergeneric hybrids exist and are called xFerobergia.

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