Pediocactus nigrispinus
A small, densely spined, clumping cactus of the sagebrush steppe and basalt outcrops of the Columbia Plateau, with magenta flowers in early spring. It needs a frozen, dry winter, a hot, dry summer and very sharp drainage, and like other Pediocactus it rots easily if kept wet or warm in winter.
Where it grows wild
Grows on rocky hills, basalt outcrops and gravelly flats in arid sagebrush steppe and semi-desert, fully exposed and often with Opuntia.
The literature gives about 260 to 1,200 m. Few records carry an elevation; the climate sites lie at about 670 to 1,220 m.
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The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:
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Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app. Photo from Wikimedia Commons, used under its CC BY-SA 3.0 licence, unmodified.