Giant Blue Eyed Mary (Collinsia grandiflora) growing in a patch.  One of 100+ species of Pacific Northwest native plants available at Sparrowhawk Native Plants, Native Plant Nursery in Portland, Oregon.

Giant Blue Eyed Mary

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Collinsia grandiflora

Don't be fooled by the common name- it's not a giant. This plant has adorable, dainty flowers containing a blue color that is not common in flowers. It looks best when planted in swaths or patches rather than individual plants. Usually found in dry, rocky or upland sites. This native annual prefers well drained soils and can reseed well if conditions are ideal. Attracts many native bees, bumblebees and butterflies.

  • Plant type/canopy layer: annual herbaceous plant, herb/ground layer 
  • Size at maturity: 8"-15" tall and 8”-15” wide
  • Light requirements: full sun to part shade
  • Moisture requirements: very dry to moist soil
  • Bloom Time: early May
  • Wildlife support: Attracts many native bees, bumblebees and butterflies.
  • Native habitat/range: Western North America from BC to Northern CA. Portland Plant List - yes. 
  • Special features & uses: pollinator gardens, meadowscapes, drought-tolerant  

Packet Contains: approximately 200 seeds

Direct sowing: best sown in fall. Seeds will germinate readily in fall and grow steadily throughout the winter. Can be sown in spring (before April), plants will be shorter.

Scatter seed on loose-weed free soil. between September and November or in March so that seeds will benefit from seasonal rains.  If sowing in April or May, seeds will benefit from supplemental water to encourage strong growth and blooms the first year. Raked in the seeds to increase seed-to-soil contact, but be careful not to cover the seed with more than 1/4" soil.

Growing transplants: Seeds do not exhibit dormancy but germinate best in cool temperatures (50- 65 degrees). Can take a few weeks before seed germinate

Photo Credit: Steele Acres Native Willamette Valley Seed