Toothpick Cactus. Stetsonia coryne, Cactus Family ( Cactaceae ), Toothpick Cactus. Also Called: Argentine Toothpick. We wish to thank Wikipedia, the free encyclopedia for some of the information on this page. We share images and information with Wikipedia. The toothpick cactus (Stetsonia coryne) is a species of cactus and the sole species of its genus (Stetsonia). The plant originates from the low northwest deserts of Argentina and Bolivia. A rare xeroscape plant in Phoenix. Can take full sun but does best in some shade inder a nurse tree when very young. Quick Notes: Height: Height from 20 - 30 feet. Stems: 8 - 12 inches in diameter. Flowers: Its flowers are white. They mostly bloom at night and and by morning they close up again. Blooming Time: May - July. Fruit & Seeds: The fruits are large and yellow in late winter. They have an edible, white pulp. Leaves or Segments: Stems are bluish-gray with 8 to 9 rounded ribs, shallow grooves. Has felted areoles, each bearing 2 to 5 inch long spines. Fruit: Green spineless edible fruit, 1-1/4 inches in diameter dry when ripe. Seeds: Black oval - about 1/32 inch in length. Found: Lower elevations where water is available. It grows well in sand, sandy loam.. It needs good drainage and aeration. It nature it favors southern facing slopes between elevations of 984 - 2,625 feet. Elevation: 0 -2,700 Feet. Hardiness: USDA Zone 9b: to -3.8 �C (25 �F) USDA Zone 10a: to -1.1 �C (30 �F) USDA Zone 10b: to 1.7 �C (35 �F) USDA Zone 11: above 4.5 �C (40 �F) Soil pH requirements: 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline) Sun Exposuret: Full Sun Habitat: Native to the low deserts of Argentina, & Bolivia. Miscellaneous: Maintenance: Low. Photos Taken February 27, 2008. In Desert Botantical Garden Phoenix, Arizona.

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