Phacelia sericea

Family: Boraginaceae

Common name: SCORPION WEED

Native to: Western North America


Types: biennial, perennial

Forms: clumping, erect

Max height: 2 feet

Max width: 0.33 feet


blue/green, magenta/purple, white/off white




Attracts wildlife: adult butterfly, specific butterfly species

Exposure: sun

Propagates by: seed

flowers in summer

Soil type: well drained

USDA Zones: zone 3 -40 f, zone 4 -30 f, zone 5 to -20 f, zone 6 to -10 f, zone 7 to 0 f, zone 8 to +10 f, zone 9 to +20 f, zone 10 to +30 f

Temp. range: -40 to +40 °F

Water: regular

  • Phacelia sericea 3
  • Phacelia sericea 4
  • Phacelia sericea 2
  • Phacelia sericea 5
  • Phacelia sericea

There are 230 species of Phacelia, also known as SCORPION WEED, is a member of the Boraginaceae family. Phacelia californica is a perennial wildflower. It resides mostly along the coast of northern California; patches are found in the Sierras as well. This is one of the cultivated Phacelia perennials that appeal to butterflies. Phacelia sericea, an alpine perennial that is summer flowering, prefers regular water, and grows to 2 feet tall in Zones 3-10. Try it in a container.

Unspecified butterflies that reside in northern California will feed on are Phacelia californica. More than one hundred butterfly species inhabit this region.