North America Native Plant

Yellow Loosestrife

Botanical name: Lysimachia ×radfordii

USDA symbol: LYRA4

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Yellow Loosestrife: A Rare Native Gem for Southeastern Gardens Meet yellow loosestrife (Lysimachia ×radfordii), a charming native perennial that’s one of North Carolina’s best-kept gardening secrets. This delightful forb brings sunny yellow blooms to the garden while supporting local ecosystems – though finding it might take a bit of detective ...

Yellow Loosestrife: A Rare Native Gem for Southeastern Gardens

Meet yellow loosestrife (Lysimachia ×radfordii), a charming native perennial that’s one of North Carolina’s best-kept gardening secrets. This delightful forb brings sunny yellow blooms to the garden while supporting local ecosystems – though finding it might take a bit of detective work!

What Makes Yellow Loosestrife Special?

Yellow loosestrife is what botanists call a hybrid species (notice that × symbol in its scientific name), which helps explain why it’s found in such a limited area. As a native perennial forb, it lacks woody stems but returns year after year, forming clumps of herbaceous growth that add reliable color to your landscape.

The cheerful yellow flowers are the star of the show, creating bright splashes of color that illuminate shaded woodland areas and moist garden spots. Like other members of the loosestrife family, this plant offers a naturalistic beauty that fits perfectly into informal garden designs.

Where Does Yellow Loosestrife Call Home?

Here’s where things get interesting – yellow loosestrife has an extremely limited native range, found only in North Carolina. This makes it a true regional treasure and a perfect choice for gardeners in the Tar Heel State who want to showcase their area’s unique botanical heritage.

Why Grow Yellow Loosestrife?

If you’re lucky enough to live in North Carolina, here’s why yellow loosestrife deserves a spot in your garden:

  • True native appeal: Support your local ecosystem with a plant that evolved right in your backyard
  • Low maintenance: Once established, perennial forbs like this typically require minimal care
  • Pollinator support: Yellow flowers generally attract bees and other beneficial insects
  • Naturalistic beauty: Perfect for woodland gardens and naturalized areas
  • Perennial reliability: Returns year after year without replanting

Growing Conditions and Care

While specific growing requirements for this rare hybrid aren’t widely documented, we can make educated guesses based on its loosestrife relatives and North Carolina habitat:

  • Hardiness: Likely suitable for USDA zones 6-9, perfect for most of North Carolina
  • Moisture: Probably prefers consistently moist soil, as most loosestrifes do
  • Light: Likely thrives in partial shade to full sun
  • Soil: Adaptable to various soil types, with good drainage important

Garden Design Ideas

Yellow loosestrife works beautifully in:

  • Native plant gardens showcasing North Carolina flora
  • Woodland or shade gardens
  • Rain gardens or moisture-loving plant collections
  • Naturalized areas where you want a wild look
  • Pollinator gardens supporting local beneficial insects

A Word About Sourcing

Here’s the challenge – because yellow loosestrife is so rare and geographically limited, finding it may require some patience. If you do locate a source, make sure it’s from a reputable native plant nursery that propagates rather than wild-collects their plants. This ensures you’re not impacting wild populations of this uncommon species.

The Bottom Line

Yellow loosestrife is a wonderful choice for North Carolina gardeners who want to grow something truly special and locally native. While its rarity means it won’t be available at every garden center, the effort to track it down rewards you with a unique piece of your region’s botanical heritage. Plus, you’ll be supporting local ecosystems and creating habitat for native pollinators – what’s not to love about that?

Just remember: when it comes to rare native plants like this one, responsible sourcing is key to ensuring these natural treasures remain part of North Carolina’s landscape for generations to come.

Yellow Loosestrife

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Primulales

Family

Primulaceae Batsch - Primrose family

Genus

Lysimachia L. - yellow loosestrife

Species

Lysimachia ×radfordii H.E. Ahles [loomisii × quadrifolia] - yellow loosestrife

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