Echinocactus grusonii
Golden Barrel Cactus

A slow-growing Mexican cactus with a rounded to cylindrical, dark green body. Prominent vertical ribs are lined with needle-sharp yellow spines. Yellow flowers appear in summer. Produces offsets. Native to Mexico.

USDA zones: 9 - 10
Sunset zones: 12 - 24
Mature size: 1 - 4 feet high and wide
Light needs: full sun or partial shade in hotter climates
Water needs: moderate water