North America Native Plant

Florida Loosestrife

Botanical name: Lythrum flagellare

USDA symbol: LYFL4

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Lythrum vulneraria auct. non Aiton (LYVU2)   

Florida Loosestrife: A Rare Wetland Gem Worth Protecting If you’re passionate about native plants and wetland conservation, Florida loosestrife (Lythrum flagellare) might just capture your heart—though you’ll need to approach this botanical treasure with extra care and consideration. What Makes Florida Loosestrife Special? Florida loosestrife is a delicate perennial forb ...

Rare plant alert!

Region: Conservation status by state

Status: S2: Status is uncertain but is somewhere between the following rankings: Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘

Florida Loosestrife: A Rare Wetland Gem Worth Protecting

If you’re passionate about native plants and wetland conservation, Florida loosestrife (Lythrum flagellare) might just capture your heart—though you’ll need to approach this botanical treasure with extra care and consideration.

What Makes Florida Loosestrife Special?

Florida loosestrife is a delicate perennial forb that’s as rare as it is beautiful. This herbaceous plant produces charming small pink to purple flowers that seem to dance above wetland waters. Unlike its more common relatives, this particular loosestrife is a true Florida native that has quietly made its home in the state’s precious wetland ecosystems for countless generations.

You might also see this plant referenced by its scientific synonym, Lythrum vulneraria, though Lythrum flagellare is the accepted name today.

Where Does It Call Home?

Florida loosestrife is found exclusively in Florida, making it what botanists call an endemic species. This means it exists nowhere else in the world naturally—pretty amazing when you think about it! The plant has adapted specifically to Florida’s unique wetland conditions and climate.

A Word of Caution: This Plant is Rare

Here’s where things get serious. Florida loosestrife carries a Global Conservation Status of S2, which means it’s considered Imperiled. In plain English, this plant is extremely rare and vulnerable to disappearing forever. With typically only 6 to 20 known populations and somewhere between 1,000 to 3,000 individual plants remaining in the wild, every single specimen matters.

If you’re considering adding this plant to your garden, please ensure you source it responsibly from reputable native plant nurseries that propagate rather than collect from wild populations. Never, ever dig this plant from the wild—it could push local populations closer to extinction.

Growing Florida Loosestrife: It’s All About Water

This isn’t your typical garden plant, and that’s exactly what makes it fascinating. Florida loosestrife is classified as an obligate wetland species, which means it almost always needs wetland conditions to thrive. Think of it as nature’s way of saying water, water everywhere!

Ideal Growing Conditions:

  • Full sun to partial shade
  • Consistently moist to wet soils
  • USDA Hardiness Zones 8-10 (perfect for Florida’s climate)
  • Bog-like conditions or constructed wetlands
  • High humidity environments

Where Florida Loosestrife Shines in Your Landscape

This plant is perfect for specialized garden settings like:

  • Bog gardens
  • Rain gardens with consistent moisture
  • Constructed wetlands
  • Native plant restoration projects
  • Educational or conservation-focused landscapes

Don’t expect this beauty to thrive in traditional flower beds or dry landscapes—it’s a wetland specialist through and through.

Wildlife and Pollinator Benefits

While Florida loosestrife may be small in stature, it punches above its weight when it comes to supporting local ecosystems. The delicate flowers attract native bees, small flies, and other pollinators that have co-evolved with Florida’s native flora. By growing this plant, you’re not just adding beauty to your landscape—you’re supporting a piece of Florida’s natural heritage.

Should You Plant Florida Loosestrife?

The answer depends on your specific situation and commitment level. If you have the right wetland conditions and can source the plant responsibly, growing Florida loosestrife can be a meaningful way to participate in conservation efforts. However, this isn’t a plant for beginners or casual gardeners—it requires specialized care and conditions.

Consider Florida loosestrife if you:

  • Have experience with wetland gardening
  • Can provide consistent moisture or wetland conditions
  • Are committed to conservation and native plant preservation
  • Want to support local pollinators and ecosystems
  • Can source plants from reputable, conservation-minded nurseries

The Bottom Line

Florida loosestrife represents something increasingly rare in our modern world—a plant that exists in perfect harmony with its specific environment. While it may not be the easiest plant to grow, it offers dedicated gardeners the opportunity to participate in preserving Florida’s unique botanical heritage. Just remember: with great botanical beauty comes great responsibility. If you choose to grow this imperiled species, do so with the respect and care it deserves.

Florida Loosestrife

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

Myrtales

Family

Lythraceae J. St.-Hil. - Loosestrife family

Genus

Lythrum L. - loosestrife

Species

Lythrum flagellare Shuttlw. ex Chapm. - Florida loosestrife

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