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Sundial Lupine Wikimedia Commons
Fabaceae

Sundial Lupine

Lupinus perennis

Wild imagination and ecological harmony.

Family
Fabaceae
Genus
Lupinus
Native to
eastern North America
Bloom season
Late Spring, Early Summer
Type
herbaceous perennial
Height
30–60 cm
Sunlight
full sun
Soil
sandy, acidic, well-drained
Water
low
Hardiness
3–8
Lifespan
perennial; 5–10 years

Did you know

  • It is the sole food plant for the caterpillar of the endangered Karner blue butterfly.
  • The palmate leaves collect dew and rainwater in their center like a tiny sundial or cup, giving it its name.
  • Like all lupines, it enriches poor sandy soils by partnering with nitrogen-fixing bacteria in its roots.
  • It was nearly eliminated from its native range by habitat loss, threatening the Karner blue butterfly with extinction.
  • Henry David Thoreau wrote about lupine fields near Walden Pond, describing them as 'the richest blue.'

Color meanings

Blue

imagination and wonder

White

purity and natural grace

Uses

  • native plant restoration
  • butterfly gardens
  • wildflower meadows
  • sandy soil improvement