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Blue Vervain

Botanical Name
Verbena hastata
Min Zone
3
Max Zone
8
Height
2 to 6 feet
Width
12 to 18 inches
Flowers
Summer: purplish-blue tubular flowers, pencil-like flower spikes arranged in candelabra-like inflorescenes, blooms begin at the bottom of the flower spike
Light
Full sun
Soil
Medium to wet
Planting & Care
  • Works well planted along streams, ponds or other moisture rich areas of the landscape
  • Spreads by rhizomes and self seeding
  • Birds, including the cardinal, swamp sparrow, field sparrow, song sparrow and slate-colored junco feed on the seeds
  • Larval host to the common buckey caterpillar
  • Plants can be pinched back several times before flowering to encourage branching and fuller habit

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Sept. 11, 2026
Illinois State Master Gardener Conference
Rockford, IL
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Sept. 12, 2026
2026 Knowledge in Bloom Conference
Urban Ecology Center, Milw., WI
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Sept. 17, 2026
FREE WEBINAR:
Fall Landscape Care and Planting

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Sept. 26, 2026
Pruning Hydrangeas & Other Shrubs
Pasquesi Home & Gardens, Lake Bluff, IL

Oct. 6, 2026
Upper Midwest Invasive Species Conference
La Crosse, WI
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