Common blue violet (Viola sororia) — Plotwright

›

›

Common blue violet

Habit (mature) · Ryan Hodnett / Wikimedia Commons · CC BY-SA 4.0

Limited coverage

Common blue violet

Viola sororia

A low, clump-forming native woodland violet of eastern North America, grown for its early spring blue-to-purple flowers with conspicuous white throats held over glossy, heart-shaped leaves. It does not run, but self-seeds freely — to the point of being weedy in rich, moist ground. A larval host for fritillary butterflies and a nectar source for early bees and butterflies; the leaves are high in vitamins A and C.

Native: 38 US states + 4 CA provinces

Review: Source-backed

Climate fit: broad (70/100)

Border

Filler

Pollinator

Light

Full sun / Part sun / Part shade

Water

Consistent moisture

Mature size

6-10" tall · 8" apart

Hardy in zones

3a-7b

brutally cold to cold winters

Summer heat range

Cool-Warm

cool to warm summers Interim Plotwright tier until the plant AHS range is authored.

Native in Illinois

Yes

Related products

Sponsored

Watering and irrigation

Watering cans, soaker hoses, drip kits, moisture meters, and timers.

Search watering and irrigation on Amazon →

Winter protection and storage

Frost cloth, plant covers, bulb/tuber storage supplies, burlap, and cold frames.

Search winter protection and storage on Amazon →

Wildlife protection

Bird netting, deer fencing, rabbit guards, trunk guards, and crop covers.

Search wildlife protection on Amazon →

Seed starting

Trays, cells, humidity domes, heat mats, grow lights, and seed-starting mix.

Search seed starting on Amazon →

Transplanting and establishment

Trowels, transplant spades, starter fertilizer, root stimulators, and watering bags.

Search transplanting and establishment on Amazon →

Fertility and feeding

Compost, balanced fertilizer, slow-release plant food, and organic amendments.

Search fertility and feeding on Amazon →

Plotwright may earn a commission from purchases made through these links, at no extra cost to you.

A documented larval host for the Great spangled fritillary — specialist wildlife that depend on plants like this to reproduce.

Wildlife relationships

Cold hardiness

Now

Zone 6b

USDA

Chicago, IL · 1991-2020 average annual coldest day

Source: USDA Plant Hardiness Zone Map 2023 (1991-2020 climatology) via ArcGIS FeatureServer

Well-suited

2050

Zone 7b

Plotwright

Your zone + climate-model shift · SSP3-7.0 (regional rivalry)

Marginal

In plain terms: cold winters — coldest nights typically around -3°F.

✓→⚠

Well-suited today, but likely marginal by 2050.

Heat tolerance

°C

°F

Loading current AHS heat-zone and plant heat-fit data at your coordinates…

Where this plant fits

Suitable across 34 ecoregions — 26 climate-resilient through 2070 · 8 suited today. Best matches first.

Appalachian mixed mesophytic forests

Appalachian-Blue Ridge forests

Arizona Mountains forests

Blue Mountains forests

Canadian Aspen forests and parklands

Central Tallgrass prairie

Central-Southern Cascades Forests

Colorado Rockies forests

Cross-Timbers savanna-woodland

Eastern Canadian Forest-Boreal transition

Sources & citations

Cite this page

For lesson plans, articles, or research that uses this page. To cite a single upstream fact instead, use its specific source listed below.

Plotwright. (2026, May 17). Common blue violet (Viola sororia). Retrieved 2026, June 5, from https://plotwright.garden/plants/common-blue-violet

Sources for every fact

Every fact on this page traces to a source. 18 fields cited — 18 source-backed.

NC State Extension Gardener Plant Toolbox

University extension service

Backs 17 fields

Identity

Summary

Plant type

Light

Moisture

Hardiness

Heat zone

Size

Spacing

Habit

Design roles

Seasonal interest

Growth stages

Lifecycle

Regional guidance

Success tips

Designer notes

Wikimedia Commons

Photo · CC BY-SA 4.0

Backs 1 field

Image

Lady Bird Johnson Wildflower Center Native Plant Database

Botanical research database

Community photos

The photos above are our reviewed reference set, curated for accuracy.

Plotwright

Climate-aware plant planning — every plant checked against your zone now and in 2050.

support@arteractive.co

Explore

Reference

Policies

© 2026 Plotwright