perennialN. America Native

White Vervain

Verbena urticifolia

The Story

Plant Bio

Verbena urticifolia is an upright, short-lived herbaceous perennial native to eastern and central North America, distinguished by its slender, square, grooved stems that branch sparsely toward the summit. The opposite, lanceolate leaves have coarsely serrated margins and a rough, sandpaper-like texture that closely resembles stinging nettle.

The tiny white flowers are arranged sparsely along slender, rat-tail-like spikes that form expansive, airy panicles from summer into early fall. Emerging spring foliage displays a distinctive, dull purple staining before maturing to deep green.

Uses & Benefits:

Provides a tall, airy, architectural structure with delicate white flower spikes that contrast well with broader-leaved perennials.

Adapts exceptionally well to heavy clay soils and wet, flood-prone areas where other perennials struggle to survive.

Serves as a vital larval host for the Verbena Moth and provides abundant nectar for native bees, while its seeds feed migrating songbirds.

Essentials

At a Glance

Plant Type

Perennial

Height

71"

Width

35"

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9

Water

Moderate to wet

Humidity

High

Lifespan

Short-lived perennial

Native To

North America

Toxicity

Potential toxicity

Bloom period

Summer – Early fall

In flower about 4 months of the year

Planting

How to Grow

Sow seeds directly onto a prepared weed-free seedbed in late fall, as they require cold, moist stratification to germinate.
Select a planting site in full sun to partial shade with fertile, moist, loamy soil, though clay and gravelly soils are also tolerated.
Space young plugs or bare-root crowns 18 to 24 inches apart to accommodate their mature spread and ensure adequate air circulation.
Water regularly after planting to keep the soil consistently moist until the root system is fully established.

Pro Tip

Avoid applying any fertilizer to this species; excess soil nutrients cause the tall, slender stems to become weak and flop over.

Keep It Thriving

Care Guide

Do

Cut dead stems back to ground level in late winter or early spring before new growth emerges.
Monitor and thin out volunteer seedlings annually if you wish to restrict its aggressive self-seeding habit.
Grow in areas with good air movement to minimize late-season powdery mildew on the foliage.

Don't

Do not fertilize, as high nutrient levels lead to weak, floppy growth that requires staking.
Do not plant in dry, sandy soils where moisture cannot be retained.
Do not overhead water during hot, humid periods to prevent fungal spores from establishing on the leaves.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Pest Check
Propagate
Prune
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Native GardensRain GardensMeadows and PrairiesWoodland EdgesPollinator Borders

Companion Plants

Monarda fistulosa Symphyotrichum novae-angliae Eupatorium perfoliatum

Multiply

Propagation Methods

Good to Know

Common Questions

White Vervain questions

What zones can White Vervain grow in?

White Vervain is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

When does White Vervain bloom?

White Vervain typically blooms in summer through early fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does White Vervain need full sun?

White Vervain does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is White Vervain drought tolerant?

Yes — once established (usually after the first full season), White Vervain handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.