Blue Vervain
Verbena hastata
Family Verbenaceae
That soggy spot where nothing thrives is exactly where blue vervain wants to be — a native of moist meadows that raises airy candelabras of violet-blue flowers for weeks in midsummer, each spike opening bloom by bloom while bees and butterflies work their way up.
In a rain garden it's a natural, weaving gracefully among Joe Pye weed and swamp milkweed, self-sowing just enough to feel established, never enough to bully. Goldfinches take the seed later; herbalists have valued the bitter leaf for generations. Give your wet corner some elegance.
Full Sun to Part Shade
Moderate water
Fast growth
Native to North America
Attracts butterflies
Attracts bees
From the print shop
Growing blue vervain? Hang it.
Our Plant Library collection carries blue vervain — Verbena hastata, print Nº 65, “Blue Vervain.”
526 designsfrom $12.99white or black backgroundmatte poster, unframed
Will it fruit where you are?
Enter your ZIP — we look up your USDA hardiness zone (2023 map) and check it against what blue vervain actually needs.
Hardy inZones 3-8Blue Vervain · Common problems
Common blue vervain problems
Pests
1 problem on file
- Almost none
Diseases
1 problem on file
- Powdery Mildew (minor)
Blue Vervain · Growing & propagation
Growing blue vervain
- Light
- Full Sun to Part Shade
- Water
- Moderate-High
A moist-meadow native, rain-garden plant
Soil- Rich, moist to wet · pH 6.0 - 7.5
Fertilizer- None
Pruning- Leave for winter birds; cut in spring
A slender, elegant native for moist ground — branching candelabras of tiny violet-blue flowers that bloom for weeks in midsummer, feeding bees and butterflies, with seeds goldfinches strip in fall. A rain-garden and wet-meadow natural, it self-sows gently and pairs beautifully with Joe Pye weed and swamp milkweed. Long a folk medicinal (a bitter nervine tonic).
Spacing- 18-24 in
How to plant & propagate blue vervain
- Propagate
- Division or seed
Blue Vervain · Calculators & field guides
A little help in the garden.
Blue Vervain · Yearly calendar
The blue vervain year, month by month
Jan
PruneDecember to May
BloomPruneBloomJuly
PruneDecember to May
What each band means
- Bloom — flowers open — pollinators working, frost on blossoms is the danger.
- Prune — shape it now — cuts heal cleanly and structure is visible.
These are the species' typical months — expect them a few weeks earlier in warm zones and later in cold ones. Watch the plant, not just the calendar.
Blue Vervain · Ecology & uses
Ecology & uses
Verbena hastata
Blue Vervain in the garden system
- Herbaceous layer perennial
- Nectary/insectary
- Attracts
- Butterflies, Bees, Birds
Habitat- Prairie/meadow, Wetland
- Moisture
- Wetland / wet-tolerant
Deer- Browsed
Protect young plants
- Origin
- Native to North America
What blue vervain is grown for
✓ Commonly eatenLeaves used in traditional bitter tea — culinary caution; grown mainly as a native pollinator plant
Use- Rain gardens
- Use
- Native pollinator
- Use
- Moist meadows
- Traditional use
- Tonic herb
- Edible value
- 3/5
Traditional use rating- 3/5 in herbal tradition
Harvesting & storing blue vervain
Leaves a traditional medicinal (bitter tonic tea).
Edibility, identification, and traditional-use notes here are general reference — not medical or veterinary advice, and not a claim that any plant treats or prevents anything. Medicinal ratings record how strongly a plant features in herbal tradition, nothing more. Never eat or dose a plant you have not positively identified. More on how to use this library.
Blue Vervain · Varieties & cultivars
Choosing a blue vervain variety
Species; V. stricta (hoary vervain, drier sites)
Sources & plant identity
Know what you’re growing.
See where the knowledge comes from.
Blue Vervain
Verbena hastata
The plant, at a glance.
- Botanical name
- Verbena hastata
- Plant family
- Verbenaceae
- Growth habit
- Perennial
- Origin
- Native to North America
- USDA plant symbol
- VEHA2
- Invasive risk
- Low
Hardiness, size and timing vary with your cultivar, soil and climate.
Rooted in research.
University extension research, brought together with hands-on growing experience at Story Thyme Farms.
Questions
Blue Vervain questions, answered straight.
Is blue vervain safe for kids and pets?
Blue Vervain is commonly eaten and isn't considered toxic, but "commonly eaten" isn't a guarantee for any particular person or animal — allergies, quantity, and which part you eat all matter. One caveat on this one: Leaves used in traditional bitter tea — culinary caution; grown mainly as a native pollinator plant. Never eat a plant you haven't positively identified, and check with a vet before letting pets or livestock graze anything new.
When do you harvest blue vervain?
Leaves a traditional medicinal (bitter tonic tea).
How do you propagate blue vervain?
Division or seed.
Elsewhere
Where blue vervain sits in the library.
Common Milkweed
Ironweed
Cup Plant
Helen's Flower (Sneezeweed)