perennial

Mugwort

The Story

Plant Bio

Artemisia vulgaris, commonly known as mugwort, is an upright, stiffly branched herbaceous perennial that spreads indefinitely via aggressive underground rhizomes. The deeply lobed foliage is dark green on the upper surface and densely coated in woolly-white hairs underneath, giving new growth a distinctive silvery-gray appearance.

This species produces numerous small, inconspicuous yellowish or reddish-brown flower heads arranged in narrow, leafy spikes from mid-summer through fall. The entire plant is rich in bitter, highly aromatic volatile oils that make the foliage unpalatable to browsing deer and rabbits.

Uses & Benefits:

Silvery-white leaf undersides provide strong textural and color contrast in naturalistic designs.

Extremely hardy and drought-tolerant, making it useful for stabilizing dry, poor soils where other plants struggle.

Provides dense ground cover and general shelter for beneficial predatory insects.

Essentials

At a Glance

Plant Type

Perennial

Height

71"

Width

120"

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9

Water

Low to moderate

Humidity

Moderate

Lifespan

Perennial

Native To

Europe, Asia, northern Africa

Toxicity

Toxic in large quantities; skin irritant

Bloom period

Summer – Fall

In flower about 6 months of the year

Planting

How to Grow

Select a site in full sun to very light shade with well-drained soil, avoiding any areas prone to standing water.
Install a deep, physical root barrier or rhizome guard around the planting area to contain the aggressive underground spread.
Plant divisions or potted starts at the same depth as their nursery container and water thoroughly to settle the soil.
Refrain from applying supplemental fertilizer, as excess nutrients trigger weak, floppy stem growth.

Pro Tip

Always install deep physical rhizome guards or grow this species in heavy containers to prevent the aggressive root system from invading neighboring garden beds.

Keep It Thriving

Care Guide

Do

Cut all stems back to ground level in late winter before new spring growth emerges.
Wear gloves when handling the foliage to prevent contact dermatitis.
Grow in containers or confined beds to control the invasive rhizomatous spread.

Don't

Do not plant directly into open perennial borders without a physical root barrier.
Do not overwater or plant in heavy, poorly drained soils where root rot can develop.
Do not prune into the old, dead woody stems below the crown where new buds cannot break.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Divide
Pest Check
Plant
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Erosion control on dry, sunny slopesNaturalized wild gardensBarrier plantings in contained beds

Companion Plants

Amsonia tabernaemontana Salvia nemorosa Achillea millefolium

Multiply

Propagation Methods

Good to Know

Common Questions

Mugwort questions

What zones can Mugwort grow in?

Mugwort 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.

Is Mugwort deer resistant?

Yes — Mugwort is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Mugwort bloom?

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

Does Mugwort need full sun?

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

Is Mugwort drought tolerant?

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