Non-native Plants

Hogfennel

Peucedanum palustre

USDA symbol: PEPA22

perennial forb

Lower 48 states: non-native, naturalized

If you’re looking to create a wetland garden or restore a boggy area on your property, you might come across hogfennel (Peucedanum palustre) in your research. This lesser-known perennial has some unique characteristics that make it worth understanding, whether you’re considering it for your landscape or simply curious about wetland ...

Hogfennel: A Wetland Plant for Specialized Gardens

If you’re looking to create a wetland garden or restore a boggy area on your property, you might come across hogfennel (Peucedanum palustre) in your research. This lesser-known perennial has some unique characteristics that make it worth understanding, whether you’re considering it for your landscape or simply curious about wetland plants.

What is Hogfennel?

Hogfennel is a perennial forb – basically a non-woody plant that comes back year after year. Like other members of the carrot family, it produces clusters of small white flowers in umbrella-like formations called umbels. The plant has the characteristic ferny, divided foliage you’d expect from this plant family.

Originally from Europe and western Asia, hogfennel has found its way to North America and now grows wild in Massachusetts. It’s classified as a non-native species that reproduces on its own without human intervention.

Where Does Hogfennel Grow?

Currently, hogfennel’s presence in the United States is documented in Massachusetts, though it may exist in other northeastern states as well. Its limited distribution suggests it hasn’t become widespread across the continent.

  • Species observed
  • No observations

Growing Conditions and Requirements

Here’s where hogfennel gets interesting – it’s an obligate wetland plant. This means it almost always grows in wetlands and requires consistently wet conditions to thrive. If you’re thinking about growing hogfennel, you’ll need:

  • Consistently moist to wet soil conditions
  • Full sun to partial shade
  • USDA hardiness zones 4-8
  • Bog-like or marshy conditions

Is Hogfennel Right for Your Garden?

Hogfennel might work for you if you have a specialized wetland garden, rain garden, or are involved in wetland restoration projects. Its small white flowers can attract various small insects, providing some pollinator benefits during its blooming period.

However, since hogfennel isn’t native to North America, you might want to consider native alternatives that provide similar benefits while supporting local ecosystems. Native wetland plants like wild bergamot, blue flag iris, or swamp milkweed offer comparable aesthetic appeal with greater ecological value.

Planting and Care Tips

If you decide to grow hogfennel, keep these tips in mind:

  • Plant in consistently wet areas – this isn’t negotiable for this species
  • Ensure good drainage to prevent stagnation while maintaining moisture
  • Once established, it requires minimal maintenance
  • Monitor for self-seeding, as it can reproduce on its own

The Bottom Line

Hogfennel is a specialized plant for specialized conditions. While it can serve a purpose in wetland gardens, its non-native status means it won’t provide the same ecological benefits as native wetland species. If you’re working with wet areas in your landscape, consider exploring native alternatives first. However, if you’re specifically interested in this European species for research or specialized restoration work, just ensure you can provide the consistently wet conditions it demands.

Remember, successful wetland gardening is all about matching plants to their preferred conditions – and hogfennel definitely knows what it likes!

Peucedanum palustre is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Peucedanum palustre is also known as:

Calestania palustris Koso- | USDA symbol: CAPA61

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" — matching plants to their ideal growing conditions, so they'll thrive with less care and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection can be if you don't have the right information. While tags on nursery plants list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. You might be surprised to learn that popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. The table below gives insight into the preferred growing conditions of this plant throughout its geographical distribution.

Region
Preferred Habitat

Northcentral & Northeast ()

Obligate Wetland
Wetland Glossary
Obligate Wetland
Facultative Wetland
Facultative
Facultative Upland
Obligate Upland
Almost always occurs in wetlands
Usually occurs in wetlands but may occur in non-wetlands
Can occur in wetlands and non-wetlands
Usually occurs in non-wetlands but may occur in wetlands
Almost never occurs in wetlands

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Rosidae
Order: Apiales
Family: Apiaceae Lindl. - Carrot family
Genus: Peucedanum L. - peucedanum

Species: Peucedanum palustre (L.) Moench - hogfennel

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