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Sulphur Buckwheat is one of the most beloved western natives, forming neat mats of gray-green foliage topped with vivid yellow umbels that age to orange and red. Hardy, tough, and stunning in bloom, it’s a signature species for high-desert landscapes.
Water Needs: Very low; drought-tolerant once established
Sun Needs: Full sun
Soil Requirements: Lean, gravelly or sandy soils with sharp drainage
Growing Zone: USDA Zones 4–9
Cold Hardiness: Down to ~–30°F (–34°C)
Mature Size: 6–12 in tall x 12–24 in wide (low mounding)
Native Origin: Western North America
Best Substitutes For: Creeping Phlox, Rock Cress
Landscape Uses: Rock gardens, dry slopes, pollinator meadows
Sulphur Buckwheat is one of the most beloved western natives, forming neat mats of gray-green foliage topped with vivid yellow umbels that age to orange and red. Hardy, tough, and stunning in bloom, it’s a signature species for high-desert landscapes.
Water Needs: Very low; drought-tolerant once established
Sun Needs: Full sun
Soil Requirements: Lean, gravelly or sandy soils with sharp drainage
Growing Zone: USDA Zones 4–9
Cold Hardiness: Down to ~–30°F (–34°C)
Mature Size: 6–12 in tall x 12–24 in wide (low mounding)
Native Origin: Western North America
Best Substitutes For: Creeping Phlox, Rock Cress
Landscape Uses: Rock gardens, dry slopes, pollinator meadows