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The Cactus Family

Edward Anderson was for 30 years a biology professor at Whitman College in Walla Walla before finishing his career at the Desert Botanical Garden in Phoenix. The Cactus Family is the culmination of his life’s work as, sadly, he died shortly after publication, but more importantly because it will be a long-time standard reference for these popular plants.

While not a gardener’s book–a chapter on cultivation is included but is by a different author–this provides a superb view of the remarkable diversity of cacti, well captured by excellent photographs, most by the author and many in situ. Highly recommend, too, are the chapters on ethnobotany and conservation of cacti, which illustrate how important these plants have been and continue to be throughout their range in North and South America.

Excerpted from the Summer 2012 Arboretum Bulletin.

Opuntia fragilis and its common names

Does the Opuntia fragilis in the Puget Sound carry a vernacular name of dune or shore prickly pear?

The most common vernacular name of the cactus Opuntia fragilis in Washington is brittle prickly pear. When I searched for dune or shore prickly pear, I found these common names connected with other species of Opuntia.

For more information about Opuntia fragilis, see the Washington Flora Checklist and the USDA Plant Profile.

Garden Tip #96

Ready for a truly drought tolerant garden? Plant hardy cactus and succulents. The only requirement for these plants is perfect drainage. Hardy succulents can die of rot in our winter wet. Overcome that challenge by building raised beds and mixing plenty of gravel and sand into the planting hole. The book Cacti and Other Succulents by Keith Grantham and Paul Klaassen (Timber press, $34.95) reports the following plants are good candidates for growing outside in the Pacific Northwest:

  • Cacti
    • Echinocereus triglochidiatus (hedgehog cactus)
    • Opuntia humifusa (prickly pear cactus)
    • Coryphantha vivipara (pincushion cactus)
  • Succulents
    • Delosperma cooperi (ice plant)
    • Calyptridium umbellatum (pussypaws)
    • Yucca
    • Agave paryi
    • Lewisia cotyledon
    • Sedum
    • Sempervivum.