Sweet Violet

Viola odorata

Native to:
Albania, Algeria, Austria, Azores, Baleares, Baltic States, Belarus, Belgium, Bulgaria, Canary Is., Corse, Cyprus, Czechia-Slovakia, East Aegean Is., France, Germany, Greece, Hungary, Iran, Iraq, Ireland, Italy, Kazakhstan, Kriti, Krym, Lebanon-Syria, Madeira, Morocco, Netherlands, North Caucasus, NW. Balkan Pen., Palestine, Poland, Portugal, Romania, Russia, Sardegna, Sicilia, Spain, Switzerland, Transcaucasus, Tunisia, Türkiye, Türkiye-in-Europe, Ukraine

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Violaceae
Genus:
Viola
Species:
Viola odorata
USDA Symbol:
VIOD

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
20 cm
Light Requirements:
Part Shade
Drought Tolerance:
Medium
Bloom Months:
mar,apr,may
Bloom Colors:
purple, violet, white
Food Forest:
Contains edible parts
Ground Cover:
Yes

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)
Caterpillars:
★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Keystone Species Ranking

Caterpillar Keystone:
★★★☆☆ Butterfly & moth species supported by this genus (NWF)
Pollen Specialist Bee Keystone:
★★★★★ Native pollen specialist bee species supported by this genus (NWF)

Host Plant for Caterpillars

Nais tiger moth (Apantesis nais)

Garden & Ecology Notes

Wildlife Value:
bees, butterflies
Deer Resistant:
Yes
Fragrant:
Yes

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
good drainage required
Moisture:
consistently moist
Notes:
prefers shaded or semi-shaded areas

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–42 days
Notes:
Seeds require light for germination and benefit from cold stratification. Germination can be erratic.

The above propagation data sourced from Claude AI

ORGHPS Germination Guide: Sow @ 20C. Germinates within 3 months. GA3 improves germination.

Source: Ontario Rock Garden & Hardy Plant Society