Carnegiea gigantea
Common name: 
kar-ne-GEE-a gi-gan-TEE-a
Native to (or naturalized in) Oregon: 
  • A cactus of columnar to tree-like form, grows slowly to 50 ft (15 m) tall, with a diameter of a much as 30 inches (75 cm).  The main stem/trunk is simple with one to five or more lateral, erect branches, both have many prominent ribs, armed with dense, stout spines that are up to 7 cm long.  Flowers white, single, 9-13 cm long, occurring at the ends of branches, opening at night.  Fruit oblong, about 6 x 3 cm, red or red-green, scaly, splitting irregularly, revealing red pulp, edible.
  • Sun and well-drained soil.  No additional water required once established.  It has a deep anchoring taproot to 1 m and extensive lateral roots.
  • Hardy to USDA Zone 9      Native range extends throughout most of the Sonora Desert in Arizona, California, and Mexico.  From the Hualapait Mountains in Arizona and along the Colorado River in southeastern California, and southward into Mexico; mostly below 3,500 ft (1,067 m).
  • gigantea: very large
  • The State Flower of Arizona.
Click image to enlarge
  • plants in habitat

    plants in habitat

  • plant habit, yourng

    plant habit, yourng

  • plant habit with branches

    plant habit with branches

  • plant habit, many branches

    plant habit, many branches

  • ribs and spines ("thorns")

    ribs and spines ("thorns")

  • remnant of  inner woody vascular structure

    remnant of inner woody vascular structure