woodland wildflower
Giant Blue-eyed Mary
Collinsia grandiflora
Also known as Giant Blue Eyed Mary, Blue-lips Blue-eyed Mary, Blue Lips
Native to California, Idaho, Oregon, and Washington and southern Canada
Southern British Columbia and central Idaho to northwestern California
- Light Partial shade Sun tolerance
- Moisture Moist Moisture preference
- Zones 5–10 Cold to heat range
- Bloom Apr–Jun Flowering time
- Height up to 15 in to 38 cm
- Life cycle Annual Annual to perennial
In the garden
A woodland wildflower for partial shade and evenly moist soil. At up to 15 in, it tucks into shade gardens and woodland edges. Hardy in USDA zones 5–10.
Growing conditions
Light
Full sun Partial shade Full shade
Moisture
Dry Moist Wet
Hardiness zones
Find your zone:
Pollinators & wildlife
- Bees Yellow-faced Bumble Bee
also Western Honey Bee, Black-tailed Bumble Bee, Bombus fervidus +8 more
Fuzzy-Horned Bumble Bee, Yellow-fronted Bumble Bee, Blue Orchard Bee, Knerer's Sweat Bee, Osmia cyanella, Blue-and-black Mining Bee, Raspberry Mason Bee, Bombus vancouverensis vancouverensis
Full plant details
Where it grows
- Habitat
- WoodlandThe wild plant community it grows in.
- Native range
- California, Idaho, Oregon, and Washington and southern CanadaUnited States (4): CA, ID, OR, WA. Canada (1): BC. Where it grows wild on its own, by state and province.
- Native distribution
- Southern British Columbia and central Idaho to northwestern CaliforniaThe same native range, usually more exact than the state list, and often noting where it has spread beyond it.
Growing conditions
- Light
- Partial shadeHow much sun it takes, from full sun to full shade.
- Moisture
- MoistThe soil dampness it prefers, from dry to wet.
- Hardiness zones
- USDA 5–10 · Canadian 3–9The cold-to-heat climate range it survives.
- Soil
- Moist to drier soilThe soils it grows in naturally.
Growth & form
- Height
- up to 15 in (to 38 cm)Typical mature height.
- Life cycle
- AnnualWhether it lives a single season (annual), two (biennial), or returns for years (perennial).
Flowers, foliage & fruit
- Type
- WildflowerWhat kind of plant it is.
- Bloom
- Apr–JunWhen it flowers.
- Flower color
- Blue, PurpleThe bloom color, or colors.
- Toxicity
- None knownWhether any part is poisonous to people or pets.