Photo by Melody

PlantFiles: Hookspur Violet, Early Blue Violet, Western Dog Violet
Viola adunca

Family: Violaceae (vy-oh-LAY-see-ee) (Info)
Genus: Viola (vy-OH-la) (Info)
Species: adunca (AD-un-kuh) (Info)

One vendor has this plant for sale.

7 members have or want this plant for trade.

Alpines and Rock Gardens

under 6 in. (15 cm)

3-6 in. (7-15 cm)

USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)

Sun Exposure:
Sun to Partial Shade
Light Shade

Unknown - Tell us

Bloom Color:

Bloom Time:
Mid Spring
Late Spring/Early Summer


Other details:
Flowers are fragrant
Average Water Needs; Water regularly; do not overwater
Self-sows freely; deadhead if you do not want volunteer seedlings next season

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost

Seed Collecting:
Bag seedheads to capture ripening seed
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored

Click thumbnail
to view:

By kennedyh
Thumbnail #1 of Viola adunca by kennedyh

By kennedyh
Thumbnail #2 of Viola adunca by kennedyh

By Todd_Boland
Thumbnail #3 of Viola adunca by Todd_Boland

By Todd_Boland
Thumbnail #4 of Viola adunca by Todd_Boland

By Grasmussen
Thumbnail #5 of Viola adunca by Grasmussen


1 positive
2 neutrals
No negatives

Gardeners' Notes:

Positive adunca On Dec 9, 2007, adunca from Camas, WA wrote:

This is the larval host plant for several threatened butterflies in my area (Washington/Oregon). I have a few viola adunca that I grew from seed that I got from a professor at Lewis & Clark college but I would like to know if there is anyone in my area (Clark Co. Washington) who may have some from local native stock.

Neutral Huntress On Jan 28, 2006, Huntress from Edmonton
Canada wrote:

Grows as a wildflower in central Alberta, Canada in marshy areas with partial shade. Here, also known as blue marsh violet.

Small flowers, but very pretty and smells wonderful.

Seeds harvested from wild plants can be grown fairly easily, although they may not winter over well.

Neutral Baa On Jan 23, 2003, Baa wrote:

A small perennial Violet from the USA.

Has ovate, mid-deep green, slightly toothed leaves. Bears small, light blue to violet flowers that have a faint scent.

Flowers late March - May

Loves a moist, well-drained soil in sun or light shade. Dislikes competition so grow with other small growing plants.


This plant has been said to grow in the following regions:

Anchorage, Alaska
Richmond, California
Portland, Oregon (2 reports)
Camas, Washington

We recommend Firefox
Overwhelmed? There's a lot to see here. Try starting at our homepage.

[ Home | About | Advertise | Media Kit | Mission | Featured Companies | Submit an Article | Terms of Use | Tour | Rules | Privacy Policy | Contact Us ]

Back to the top

Copyright © 2000-2015 Dave's Garden, an Internet Brands company. All Rights Reserved.

Hope for America