Image for Blue Vervain

Blue Vervain

Scientific name

Verbena hastata


Blue Vervain is a perennial wildflower species that grows about 1.5 m in height. It has a slender, upright form with reddish-green coloured, rough-haired stems. Its leaves are oppositely arranged, lance-shaped, and on short petioles with large serrations along the edge. Occasionally, there are two lobes present at the base of the leaves. The flowers are showy, blueish purple coloured, have five petals, appear on dense spikes at the top of flowering stems, and bloom between July and September. The flowers bloom first at the bottom of the spike, travelling upwards and blooming in bands. This plant spreads well and can form small colonies. The flowers are beneficial to pollinator species, like bees and butterflies. The seeds are also beneficial to wildlife species, like birds and small mammals.

Planting conditions

Blue Vervain grows best in wet to moist conditions with full or partial sun exposure. It prefers rich loam or humus soil types. It is tolerant of deer grazing, periodically flooded areas, and drought. This wildflower can be naturally found around swamps or marshes, in bogs, and along river or lake shorelines.


  • Plant height:
    • Max 1.5m
    • Max 2m
    • Max 3m
    • Any
  • Moisture level:
    • Normal
    • Moist
    • Wet
    • Drought Tolerant
    • Flood Tolerant
  • Light conditions:
    • Full sun
    • Partial sun
  • Soil type:
    • Sandy
    • Loamy
    • Clay
    • Humus
  • pH:
    • Acidic
    • Normal
  • Depth:
    • Wildflower
  • Eco Zone:
    • 3a
    • 3b
    • 4a
    • 4b
    • 5a
    • 5b
    • 6a
    • 6b
    • 7a
  • Plant type:
    • Wildflower
  • Height:
    • 1.5 m
  • Spread:
    • 1 m