North America Non-native Plant

Herb Bennet

Botanical name: Geum urbanum

USDA symbol: GEUR

Life cycle: perennial

Habit: forb

Native status: Non-native, reproduces and persists in the wild in Canada âš˜ Non-native, reproduces and persists in the wild in the lower 48 states  

Herb Bennet: A Quiet Woodland Companion with Quirky Seeds Meet herb bennet (Geum urbanum), a humble perennial that might not win any beauty contests but has carved out its own niche in shaded gardens across North America. This unassuming woodland plant brings a touch of Old World charm to naturalized ...

Herb Bennet: A Quiet Woodland Companion with Quirky Seeds

Meet herb bennet (Geum urbanum), a humble perennial that might not win any beauty contests but has carved out its own niche in shaded gardens across North America. This unassuming woodland plant brings a touch of Old World charm to naturalized areas, though it comes with some interesting quirks that every gardener should know about.

What Is Herb Bennet?

Herb bennet is a perennial forb – essentially a non-woody plant that dies back to the ground each winter and returns the following spring. Originally from Europe and western Asia, this introduced species has made itself quite at home in various regions across North America, establishing populations that persist and reproduce on their own.

The plant forms low rosettes of divided leaves and produces small, five-petaled yellow flowers in late spring and early summer. But here’s where it gets interesting: those modest blooms give way to distinctive hooked seed heads that look like tiny medieval maces. These burs are nature’s velcro, designed to hitch rides on passing animals (and unsuspecting gardeners) to spread the plant far and wide.

Where Does Herb Bennet Grow?

This adaptable plant has established itself across a surprising range of locations, from the Canadian provinces of New Brunswick, Ontario, and Quebec, down through numerous U.S. states including Illinois, Massachusetts, Michigan, New York, Ohio, Oregon, Pennsylvania, Rhode Island, Utah, Vermont, Washington, and Wisconsin.

Should You Plant Herb Bennet?

The answer depends on what you’re looking for in your garden. Herb bennet thrives in USDA hardiness zones 3-8 and offers several benefits:

  • Extremely low maintenance once established
  • Tolerates shade and various soil conditions
  • Provides nectar for small pollinators like bees and flies
  • Self-seeds readily for naturalized plantings
  • Interesting seed heads add texture to the garden

However, there are some considerations to keep in mind. As a non-native species, herb bennet doesn’t provide the same ecological benefits as indigenous plants. Its enthusiastic self-seeding can also lead to more plants than you bargained for, and those clingy seed heads have a talent for attaching themselves to clothing, pet fur, and anything else that brushes against them.

Growing Herb Bennet Successfully

If you decide herb bennet fits your garden vision, you’ll find it refreshingly easy to grow. This woodland plant prefers partial to full shade and moist, well-draining soil, though it’s quite tolerant of different soil types once established.

Plant herb bennet in spring or fall, spacing plants about 12-18 inches apart. The plant typically reaches 12-24 inches in height with a similar spread. Water regularly during the first growing season to help establish roots, but mature plants are fairly drought-tolerant in shaded locations.

One of herb bennet’s most notable characteristics is its ability to self-seed. While this makes it excellent for naturalizing, you may want to deadhead flowers if you prefer to control its spread. Otherwise, expect to find seedlings popping up in unexpected places – those hooked seeds are remarkably effective travelers.

Native Alternatives to Consider

If you love the idea of a low-maintenance woodland perennial but prefer native options, consider these alternatives that provide similar benefits while supporting local ecosystems:

  • Wild ginger (Asarum canadense) – offers attractive heart-shaped leaves
  • Coral bells (Heuchera species) – provides colorful foliage and delicate flower spikes
  • Wild columbine (Aquilegia canadensis) – features distinctive spurred flowers
  • Foamflower (Tiarella cordifolia) – produces frothy white flower clusters

The Bottom Line

Herb bennet is neither garden villain nor showstopping star – it’s somewhere comfortably in between. This quiet perennial can fill a useful niche in woodland gardens and naturalized areas, especially where you want something that practically takes care of itself. Just be prepared for its enthusiasm in self-seeding, and consider whether native alternatives might better serve your garden’s ecological goals.

Whether you choose herb bennet or opt for native woodland plants, the key is creating a garden that brings you joy while supporting the local environment. Sometimes that means embracing the humble charm of an unassuming introduced species, and sometimes it means celebrating the unique beauty of plants that evolved right in your own backyard.

Herb Bennet

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Rosales

Family

Rosaceae Juss. - Rose family

Genus

Geum L. - avens

Species

Geum urbanum L. - herb bennet

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