North America Native Plant

Douglas’ Grasswidow

Botanical name: Olsynium douglasii var. douglasii

USDA symbol: OLDOD

Life cycle: perennial

Habit: forb

Native status: Native to Canada âš˜ Native to the lower 48 states  

Synonyms: Sisyrinchium douglasii A. Dietr. (SIDO2)  âš˜  Sisyrinchium inalatum A. Nelson (SIIN14)   

Douglas’ Grasswidow: A Charming Early Spring Native If you’re looking for a delicate native wildflower that kicks off your garden’s spring show, Douglas’ grasswidow (Olsynium douglasii var. douglasii) might just be the perfect addition to your landscape. This petite perennial brings a splash of early color when most plants are ...

Douglas’ Grasswidow: A Charming Early Spring Native

If you’re looking for a delicate native wildflower that kicks off your garden’s spring show, Douglas’ grasswidow (Olsynium douglasii var. douglasii) might just be the perfect addition to your landscape. This petite perennial brings a splash of early color when most plants are still catching up from winter’s slumber.

What Makes Douglas’ Grasswidow Special?

Don’t let the quirky name fool you – this little beauty has nothing to do with actual grass or unfortunate marital circumstances! Douglas’ grasswidow is a charming member of the iris family that produces small but conspicuous red flowers in early spring. The plant forms neat bunches of fine-textured, gray-green foliage that reaches about one foot in height, making it perfect for adding subtle texture to your garden beds.

You might also see this plant listed under its former names, including Sisyrinchium douglasii, but whatever you call it, this native wildflower is a true Pacific Northwest treasure.

Where Douglas’ Grasswidow Calls Home

This native beauty is right at home across the Pacific Northwest and parts of California. You’ll find Douglas’ grasswidow growing naturally in British Columbia, California, Oregon, and Washington. It’s perfectly adapted to the climate and growing conditions of these regions, which means it’s likely to thrive in your garden if you live in these areas.

Why Your Garden Will Love Douglas’ Grasswidow

There are plenty of reasons to consider adding this native charmer to your landscape:

  • Early bloomer: Those red flowers appear in early spring when pollinators are desperately seeking their first nectar sources of the year
  • Low maintenance: As a native plant, it’s naturally adapted to local conditions and requires minimal fussing once established
  • Compact size: At just one foot tall, it won’t overwhelm smaller spaces or compete with larger plants
  • Naturalistic appeal: Perfect for creating authentic native plant gardens and naturalized landscapes
  • Rock garden star: Its small stature and drought tolerance make it ideal for rock gardens and xeriscaping

Growing Douglas’ Grasswidow Successfully

The good news is that Douglas’ grasswidow isn’t particularly fussy, but like any plant, it has its preferences. Here’s what you need to know to keep it happy:

Soil Requirements

This native prefers well-draining soils and won’t tolerate wet feet. It does best in coarse to medium-textured soils – think sandy loam rather than heavy clay. The plant prefers slightly acidic to neutral soil with a pH between 6.0 and 7.8.

Light and Water Needs

Douglas’ grasswidow prefers full sun but can’t handle much shade, so choose your planting spot accordingly. Once established, it has medium drought tolerance, meaning it can handle some dry spells but appreciates consistent moderate moisture during its growing season.

Climate Considerations

This tough little plant can handle temperatures as low as -23°F and needs at least 120 frost-free days to complete its growing cycle. It’s well-suited to areas receiving 14-20 inches of annual precipitation.

Planting and Propagation Tips

Douglas’ grasswidow can be grown from seed or planted as bulbs. If you’re starting from seed, be patient – seedling vigor is typically low, so germination and establishment can take time. For quicker results, look for bulbs from native plant nurseries, though you might need to special order them since commercial availability is limited.

Plant bulbs in fall for spring blooms, spacing them about 1,700-2,700 per acre if you’re doing a large naturalized planting. For home gardens, plant them about 6-8 inches apart in small drifts for the best visual impact.

Perfect Garden Partners

Douglas’ grasswidow shines in native plant gardens alongside other Pacific Northwest natives. Consider pairing it with native sedges, wild ginger, or other early spring bloomers that share similar growing conditions. Its fine texture and small stature make it an excellent companion for bolder native perennials and shrubs.

A Few Things to Keep in Mind

While Douglas’ grasswidow is generally easy-going, there are a few things to remember:

  • It doesn’t resprout after cutting, so avoid heavy foot traffic or mowing during the growing season
  • The plant has a moderate lifespan, so you may need to replant every few years
  • Seeds are produced in low abundance, so don’t expect it to self-sow aggressively
  • It spreads very slowly vegetatively, so don’t worry about it taking over your garden

The Bottom Line

Douglas’ grasswidow is a delightful choice for gardeners who want to support native ecosystems while adding early spring interest to their landscapes. While it may not be the showiest plant in your garden, its quiet charm and ecological benefits make it a worthy addition to native plant gardens, rock gardens, and naturalistic landscapes throughout the Pacific Northwest. Plus, there’s something deeply satisfying about growing a plant that’s perfectly suited to your local environment – it’s gardening in harmony with nature at its finest!

How

Douglas’ Grasswidow

Grows

Growing season

Spring and Summer

Lifespan

Moderate

Growth form & shape

Bunch and Erect

Growth rate

Moderate

Height at 20 years
Maximum height

1.0

Foliage color

Gray-Green

Summer foliage density

Porous

Winter foliage density

Porous

Foliage retention

No

Flowering

Yes

Flower color

Red

Fruit/seeds

No

Fruit/seed color

Brown

Allelopath

No

Nitrogen fixing

None

Toxic

None

C:N Ratio

High

Fire Resistant

No

Foliage Texture

Fine

Low-growing Grass

No

Resproutability

No

Coppice Ability

No

Bloat

None

Douglas’ Grasswidow

Growing Conditions

Adapted to Coarse Soil

Yes

Adapted to Medium Soil

Yes

Adapted to Fine Soil

No

Anaerobic tolerance

None

CaCO₃ tolerance

Low

Cold Stratification

No

Drought tolerance

Medium

Nutrient requirement

Medium

Fire tolerance

Medium

Frost-free days minimum

120

Hedge tolerance

None

Moisture requirement

Medium

pH range

6.0 to 7.8

Plants per acre

1700 to 2700

Precipitation range (in)

14 to 20

Min root depth (in)

8

Salt tolerance

None

Shade tolerance

Intolerant

Min temperature (F)

-23

Cultivating

Douglas’ Grasswidow

Flowering season

Early Spring

Commercial availability

Contracting Only

Fruit/seed abundance

Low

Fruit/seed season

Spring to Summer

Fruit/seed persistence

Yes

Propagated by bare root

Yes

Propagated by bulb

Yes

Propagated by container

No

Propagated by corm

No

Propagated by cuttings

No

Propagated by seed

Yes

Propagated by sod

No

Propagated by sprigs

No

Propagated by tubers

No

Seed per pound

500000

Seed spread rate

None

Seedling vigor

Low

Small grain

No

Vegetative spread rate

Slow

Douglas’ Grasswidow

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Liliales

Family

Iridaceae Juss. - Iris family

Genus

Olsynium Raf. - grasswidow

Species

Olsynium douglasii (A. Dietr.) E.P. Bicknell - Douglas' grasswidow

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA