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North America Native Plant

Saltmarsh False Foxglove

Saltmarsh False Foxglove: A Coastal Native Worth Growing If you’re gardening near the coast and looking for a truly authentic native plant that thrives where others struggle, meet the saltmarsh false foxglove (Agalinis maritima var. grandiflora). This charming annual might not be the showiest plant in your garden, but it’s ...

Saltmarsh False Foxglove: A Coastal Native Worth Growing

If you’re gardening near the coast and looking for a truly authentic native plant that thrives where others struggle, meet the saltmarsh false foxglove (Agalinis maritima var. grandiflora). This charming annual might not be the showiest plant in your garden, but it’s got something special that makes it worth considering – especially if you’re dealing with salty, wet conditions that send other plants running for the hills.

What Exactly Is Saltmarsh False Foxglove?

Don’t let the false foxglove part fool you – this little beauty is the real deal when it comes to coastal gardening. Saltmarsh false foxglove is a native annual forb, which is just a fancy way of saying it’s a soft-stemmed, herbaceous plant that completes its life cycle in one year. You might also see it referred to by its tongue-twisting scientific name, Agalinis maritima var. grandiflora, or encounter it in older books under various synonyms like Gerardia maritima var. grandiflora.

Where Does It Call Home?

This coastal specialist is native to the southeastern United States, naturally occurring in saltmarshes and coastal areas across eight states: Alabama, Florida, Louisiana, Mississippi, North Carolina, South Carolina, Texas, and Virginia. If you live in these areas, you’re looking at a plant that truly belongs in your local ecosystem.

Why You Might Want to Grow It

Here’s where saltmarsh false foxglove really shines – it’s a problem-solver for those tricky spots in your garden. Got a soggy area that gets salt spray? Most plants will throw in the towel, but this tough little annual actually prefers these challenging conditions. The delicate pink to purple tubular flowers may be small, but they add a subtle charm to coastal gardens and provide nectar for native bees and other small pollinators.

This plant is perfect for:

  • Coastal gardens that receive salt spray
  • Rain gardens in coastal areas
  • Native plant gardens focused on regional flora
  • Wetland restoration projects
  • Areas with poor drainage and high salt content

Growing Conditions and Care

If you’re thinking about adding saltmarsh false foxglove to your garden, here’s what it needs to be happy:

Light: This sun-lover wants full sun exposure throughout the day. Don’t try to coddle it in partial shade – it won’t thank you for it.

Soil and Water: Here’s where things get interesting. While most plants hate wet feet, saltmarsh false foxglove actually prefers consistently moist to wet soils. It’s also remarkably salt-tolerant, making it perfect for coastal conditions where salt spray and occasional flooding are facts of life.

Climate: This plant is suited for USDA hardiness zones 8-10, which aligns perfectly with its natural coastal range. If you’re outside these zones, it’s probably not the right choice for your garden.

Planting and Care Tips

Since saltmarsh false foxglove is an annual, you’ll need to replant it each year or allow it to self-seed. Here are some tips for success:

  • Plant in spring after the last frost date
  • Choose the wettest, saltiest spot in your garden – seriously!
  • Don’t worry about soil amendments; this plant prefers lean, natural conditions
  • Water regularly to maintain consistently moist soil
  • Allow plants to go to seed if you want them to return next year

Is This Plant Right for You?

Saltmarsh false foxglove isn’t for every gardener or every garden. It’s a specialist that really shines in very specific conditions. If you live inland, have well-drained soil, or garden in areas without salt exposure, this probably isn’t your plant. But if you’re struggling with wet, salty conditions near the coast, this native annual could be exactly what you’ve been looking for.

The key is understanding that this isn’t a plant you grow for dramatic color or bold statements. Instead, it’s about working with your local ecosystem, supporting native pollinators, and finding beauty in plants that are perfectly adapted to challenging coastal conditions. Sometimes the most rewarding gardening experiences come from embracing what grows naturally in your area – and saltmarsh false foxglove is a perfect example of that philosophy in action.

Saltmarsh False Foxglove

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Scrophulariales

Family

Scrophulariaceae Juss. - Figwort family

Genus

Agalinis Raf. - false foxglove

Species

Agalinis maritima (Raf.) Raf. - saltmarsh false foxglove

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