North America Non-native Plant

Annual Hedgenettle

Botanical name: Stachys annua

USDA symbol: STAN

Life cycle: annual

Habit: forb

Native status: A waif, a non-native that isn't naturalized in Canada âš˜ Non-native, reproduces and persists in the wild in the lower 48 states  

Annual Hedgenettle: A Modest Wildflower for Naturalized Gardens If you’re looking for a low-maintenance plant that won’t demand much attention but still contributes to your garden’s ecosystem, annual hedgenettle (Stachys annua) might catch your interest. This unassuming member of the mint family brings a quiet charm to naturalized spaces, though ...

Annual Hedgenettle: A Modest Wildflower for Naturalized Gardens

If you’re looking for a low-maintenance plant that won’t demand much attention but still contributes to your garden’s ecosystem, annual hedgenettle (Stachys annua) might catch your interest. This unassuming member of the mint family brings a quiet charm to naturalized spaces, though it’s definitely more of a supporting player than a garden star.

What is Annual Hedgenettle?

Annual hedgenettle is a small forb—essentially an herbaceous flowering plant without woody stems. True to its name, this plant completes its entire life cycle in just one growing season, from seed to flower to seed again. As a member of the mint family, it features the characteristic square stems that make identification easier once you know what to look for.

Originally hailing from Europe and western Asia, this plant has made itself at home in parts of North America. It’s considered non-native here, having been introduced and now reproducing on its own in the wild across several states.

Where Does It Grow?

Annual hedgenettle has established populations in a handful of states, primarily in the Northeast and Mid-Atlantic regions. You’ll find it growing in New Brunswick, Kansas, Maine, Massachusetts, New Jersey, New York, Pennsylvania, Rhode Island, and Virginia. In Canada, it’s considered a waif—meaning it shows up occasionally but doesn’t establish permanent populations.

Garden Appeal and Appearance

Let’s be honest: annual hedgenettle won’t win any beauty contests. Its small white to pale pink flowers appear in whorled clusters along the square stems, creating a subtle, almost whisper-quiet presence in the garden. The flowers are tiny and delicate, more interesting up close than from a distance.

This plant typically reaches modest heights and spreads through self-seeding rather than aggressive growth. Its appearance is more charming weed than showstopper, which can actually be perfect for certain garden styles.

Where Annual Hedgenettle Fits in Your Landscape

Annual hedgenettle works best in:

  • Naturalized or wild garden areas
  • Meadow-style plantings
  • Casual, low-maintenance garden spaces
  • Areas where you want subtle texture without bold color

This isn’t a plant for formal borders or prominent display areas. Think of it more as a gap-filler that adds gentle texture and supports local pollinators without stealing the show.

Growing Conditions and Care

One of annual hedgenettle’s best qualities is its easy-going nature. This plant thrives in full sun to partial shade and tolerates poor soils that might challenge more finicky plants. Once established, it’s quite drought tolerant, making it suitable for low-water gardens or areas that receive irregular irrigation.

The plant performs well in USDA hardiness zones 3-9, though as an annual, cold hardiness is less of a concern than ensuring it can complete its growing cycle before the first frost.

Planting and Maintenance

Growing annual hedgenettle is refreshingly simple:

  • Direct sow seeds in spring after the last frost
  • Scatter seeds lightly over prepared soil—no need to bury them deeply
  • Water gently until germination occurs
  • Once established, minimal care is needed
  • Allow plants to self-seed for next year’s population

Be aware that this plant can self-seed enthusiastically, which some gardeners appreciate and others might find weedy. Monitor its spread if you prefer more controlled garden spaces.

Wildlife and Pollinator Benefits

While not a pollinator powerhouse, annual hedgenettle does attract small bees and flies with its nectar-rich flowers. These smaller pollinators often get overlooked, but they play important roles in garden ecosystems. The plant provides a modest but meaningful contribution to supporting local pollinator populations.

Should You Grow Annual Hedgenettle?

Consider annual hedgenettle if you:

  • Enjoy naturalized, low-maintenance garden areas
  • Want to support smaller pollinators
  • Appreciate subtle, understated plants
  • Need something for poor soil conditions

However, since this plant isn’t native to North America, you might also consider native alternatives that provide similar benefits while better supporting local ecosystems. Native options like wild bergamot (Monarda fistulosa) or native hedge nettles (other Stachys species native to your region) could offer comparable benefits with greater ecological value.

Annual hedgenettle occupies a pleasant middle ground—it’s not invasive enough to avoid entirely, but not native enough to actively champion. If you’re drawn to its modest charm and easy-care nature, it can certainly earn a place in casual garden spaces. Just remember that native alternatives might serve your local ecosystem even better while providing similar low-maintenance appeal.

Annual Hedgenettle

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Lamiales

Family

Lamiaceae Martinov - Mint family

Genus

Stachys L. - hedgenettle

Species

Stachys annua (L.) L. - annual hedgenettle

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA