North America Native Plant

Marsh Rosemary

Botanical name: Limonium californicum

USDA symbol: LICA5

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Limonium californicum (Boiss.) A. Heller var. mexicanum (S.F. Blake) Munz (LICAM2)  âš˜  Limonium mexicanum S.F. Blake (LIME6)   

Marsh Rosemary: A Coastal Native That Brings Ocean Vibes to Your Garden If you’re dreaming of bringing a touch of coastal charm to your landscape, meet marsh rosemary (Limonium californicum) – a delightful native plant that’s as tough as it is beautiful. Also known as California sea lavender, this perennial ...

Marsh Rosemary: A Coastal Native That Brings Ocean Vibes to Your Garden

If you’re dreaming of bringing a touch of coastal charm to your landscape, meet marsh rosemary (Limonium californicum) – a delightful native plant that’s as tough as it is beautiful. Also known as California sea lavender, this perennial herb has mastered the art of thriving in some of nature’s most challenging conditions, making it a fantastic choice for gardeners who want stunning results with minimal fuss.

Where Does Marsh Rosemary Call Home?

This hardy native makes its home along the coastal regions of California and Oregon, where it naturally grows in salt marshes and alkaline soils. You’ll find it flourishing in those salty, sometimes harsh environments that would make many other plants wave the white flag of surrender.

What Makes Marsh Rosemary Special?

Marsh rosemary is what botanists call a forb – essentially a non-woody perennial herb that comes back year after year. But don’t let the technical terms fool you; this plant is all about delivering maximum impact with minimal drama. From spring through summer, it produces clusters of small, papery flowers in lovely shades of lavender to purple that seem to float above the foliage like tiny clouds.

The flowers aren’t just pretty to look at – they’re also excellent at attracting bees, butterflies, and other beneficial pollinators to your garden. It’s like hosting a pollinator party that lasts for months!

Why Your Garden Will Love Marsh Rosemary

Here’s where this plant really shines – it’s incredibly versatile and forgiving:

  • Salt tolerance: Perfect for coastal gardens where salt spray is a fact of life
  • Drought resistance: Once established, it barely needs supplemental watering
  • Low maintenance: Set it and (mostly) forget it gardening at its finest
  • Long blooming period: Months of colorful flowers keep your garden interesting
  • Pollinator magnet: Supports local wildlife while adding beauty

Perfect Garden Scenarios for Marsh Rosemary

This adaptable native fits beautifully into several garden styles:

  • Coastal gardens: Obviously! It’s right at home with salt air and sandy soils
  • Xeriscape designs: Excellent for water-wise landscaping
  • Wildlife gardens: The pollinators will thank you
  • Rain gardens: In appropriate climates, it handles both wet and dry conditions
  • Naturalized areas: Perfect for creating that wild but intentional look

Growing Marsh Rosemary Successfully

The best news? Marsh rosemary is remarkably easy to please. It thrives in USDA hardiness zones 8-10, making it suitable for much of the coastal and southern United States.

Sunlight: Give it full sun for the best flowering and overall health.

Soil: While it naturally loves alkaline conditions, it’s quite adaptable. The key is good drainage – even though it can handle wet conditions (it has wetland status in some regions), soggy soil without drainage can spell trouble.

Watering: Here’s the beauty of this plant – once it’s settled in, it’s incredibly drought tolerant. Water regularly the first season to help it establish, then step back and let nature take over.

Care: Minimal care required! You might want to deadhead spent flowers to encourage more blooms, but honestly, this plant is pretty self-sufficient.

A Few Things to Keep in Mind

Marsh rosemary has an interesting wetland status that varies by region. In the Arid West, it’s classified as Facultative Wetland, meaning it usually grows in wet areas but can tolerate drier conditions. In the Western Mountains, Valleys, and Coast regions, it’s considered Obligate Wetland, almost always found in wetland areas. This flexibility makes it perfect for gardens that experience seasonal moisture changes.

The Bottom Line

If you’re looking for a native plant that combines beauty, resilience, and ecological benefits, marsh rosemary deserves serious consideration. It’s particularly perfect for gardeners in coastal areas who want to work with nature rather than against it. Plus, there’s something deeply satisfying about growing a plant that’s been thriving in your region for thousands of years – it’s like welcoming home an old friend who happens to throw the best pollinator parties in the neighborhood.

Whether you’re designing a water-wise garden, creating habitat for local wildlife, or simply want a beautiful, low-maintenance perennial that won’t quit on you, marsh rosemary might just be the coastal native you’ve been searching for.

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 work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags 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. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Arid West

FACW

Facultative Wetland - Plants with this status usually occurs in wetlands but may occur in non-wetlands

Western Mountains, Valleys, and Coast

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Marsh Rosemary

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Caryophyllidae

Order

Plumbaginales

Family

Plumbaginaceae Juss. - Leadwort family

Genus

Limonium Mill. - sea lavender

Species

Limonium californicum (Boiss.) A. Heller - marsh rosemary

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