North America Native Plant

Okenia

Botanical name: Okenia

USDA symbol: OKENI

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Okenia: Florida’s Mysterious Native Annual If you’ve stumbled across the name okenia in your native plant research, you’ve discovered one of Florida’s most enigmatic botanical residents. This little-known annual forb represents the kind of hidden gem that makes native plant exploration so fascinating—and occasionally frustrating! What We Know About Okenia ...

Okenia: Florida’s Mysterious Native Annual

If you’ve stumbled across the name okenia in your native plant research, you’ve discovered one of Florida’s most enigmatic botanical residents. This little-known annual forb represents the kind of hidden gem that makes native plant exploration so fascinating—and occasionally frustrating!

What We Know About Okenia

Okenia is classified as a native annual forb found in Florida. As a forb, it’s an herbaceous plant without significant woody tissue, meaning it has a soft, green stem rather than a woody trunk or branches. Like many annual plants, okenia completes its entire life cycle—from seed to flower to seed again—within a single growing season.

Native Status and Geographic Distribution

This plant holds the important distinction of being native to the lower 48 United States, specifically documented in Florida. For native plant enthusiasts, this means okenia has evolved alongside Florida’s ecosystem and naturally supports local wildlife and environmental balance.

The Mystery Factor

Here’s where things get interesting (and a bit puzzling): okenia appears to be one of those rare native plants that hasn’t made it into mainstream gardening or even many specialized botanical references. This could mean several things:

  • It may be extremely rare or have a very limited distribution within Florida
  • It could be a plant that’s difficult to cultivate or has very specific habitat requirements
  • The name might refer to a plant that’s more commonly known by a different botanical or common name

Growing Okenia: Proceed with Caution

Given the limited information available about this plant, growing okenia presents some unique challenges. As a Florida native annual, it would theoretically be adapted to the state’s warm, humid climate and seasonal patterns. However, without specific information about its preferred growing conditions, soil requirements, or care needs, cultivation would be largely experimental.

Should You Try Growing Okenia?

For the adventurous native plant gardener, okenia represents both an opportunity and a puzzle. If you can source seeds or plants from a reputable native plant supplier, it could be worth trying in a small test area. However, given the uncertainty around this plant, you might want to consider these well-documented Florida native alternatives:

  • Florida native wildflowers like blanket flower (Gaillardia pulchella)
  • Native annuals such as tropical sage (Salvia coccinea)
  • Other Florida forbs with known growing requirements and wildlife benefits

The Bottom Line

Okenia reminds us that even in our well-documented botanical world, there are still plants that remain mysterious. While its native status makes it theoretically valuable for Florida gardens, the lack of readily available growing information means it’s better suited for experienced native plant enthusiasts willing to experiment rather than beginning gardeners looking for reliable performers.

If you have experience growing okenia or know more about this elusive native, we’d love to hear from you! The native plant community thrives on sharing knowledge about these lesser-known species.

Okenia

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

Caryophyllales

Family

Nyctaginaceae Juss. - Four o'clock family

Genus

Okenia Schltdl. & Cham. - okenia

Species

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