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Connecticut Plants
Blue Toadflax (Old-field Toadflax)
Nuttallanthus canadensis (L.) D.A. Sutton

Blue toadflax has small flowers on top of slender stalks. The small flowers and wispy foliage make the plant easy to overlook, but it can be quite abundant in its preferred habitat of sunny, sandy areas. In early summer, many sandy roadsides have a haze of blue from blue toadflax in bloom.

  • Synonyms: Linaria canadensis
  • Family: plantain (Plantaginaceae)
  • Habitat: dry sandy or rocky soil, abandoned fields, roadsides
  • Height: 6-24 inches
  • Flower size: 1/4 to 1/2 inch long
  • Flower color: pale blue-purple
  • Flowering time: April to September
  • Origin: native
Nuttallanthus canadensis (L.) D.A. Sutton
Nuttallanthus canadensis (L.) D.A. Sutton