North America Non-native Plant

Sesamum

Botanical name: Sesamum radiatum

USDA symbol: SERA6

Native status: Not native but doesn't reproduce and persist in the wild

Sesamum: The Mystery Plant That’s Harder to Find Than Your Car Keys If you’ve stumbled across the name sesamum (Sesamum radiatum) in your plant research adventures, you might be scratching your head wondering what exactly this mysterious green friend is all about. Well, grab a cup of tea and settle ...

Sesamum: The Mystery Plant That’s Harder to Find Than Your Car Keys

If you’ve stumbled across the name sesamum (Sesamum radiatum) in your plant research adventures, you might be scratching your head wondering what exactly this mysterious green friend is all about. Well, grab a cup of tea and settle in, because we’re about to dive into one of gardening’s more elusive characters.

What Exactly Is Sesamum radiatum?

Here’s where things get a bit tricky. Sesamum radiatum belongs to the plant family that includes the more famous sesame plant (you know, the one that gives us those delicious seeds on our bagels). However, unlike its well-documented cousin, this particular species is something of a botanical wallflower – there’s surprisingly little reliable information available about it in horticultural circles.

What we do know is that it’s a dicot, meaning it’s a flowering plant with two seed leaves. Beyond that basic classification, the details get pretty sparse pretty quickly.

The Great Information Mystery

If you’re hoping to add sesamum to your garden, you’re going to face a significant challenge: finding reliable growing information. The native status, geographical distribution, and specific growing requirements for Sesamum radiatum remain largely undocumented in accessible gardening resources.

This lack of information could mean several things:

  • It might be an extremely localized species with limited distribution
  • It could be a plant that’s rarely cultivated outside its native range
  • The species might be so uncommon that it hasn’t made it into mainstream horticultural databases

Should You Try to Grow It?

Here’s the honest truth: without knowing the basic growing requirements, native status, or potential invasive characteristics of Sesamum radiatum, it’s nearly impossible to give you solid advice about whether to plant it or how to care for it successfully.

If you’re determined to explore this plant, your best bet would be to:

  • Contact botanical gardens or university extension services that specialize in rare or unusual plants
  • Reach out to native plant societies in regions where Sesamum species naturally occur
  • Consult with ethnobotanical experts who might have traditional knowledge about the species

Better Alternatives for Your Garden

Since sesamum remains such a mystery, why not consider some well-documented native alternatives that can bring similar intrigue to your garden? Look for native wildflowers and herbs in your region that offer:

  • Interesting seed pods or flowers
  • Historical or cultural significance
  • Benefits for local pollinators and wildlife
  • Proven success in home gardens

Your local native plant society can point you toward species that will thrive in your specific climate and soil conditions while supporting your local ecosystem.

The Bottom Line

Sometimes in gardening, we encounter plants that remain tantalizingly out of reach – either because they’re incredibly rare, poorly documented, or simply not suited for typical garden conditions. Sesamum radiatum appears to fall into this category.

Rather than chasing after botanical ghosts, consider focusing your gardening energy on well-documented native species that will reward you with reliable growth, clear care instructions, and the satisfaction of supporting local wildlife. Your garden (and your sanity) will thank you for it!

If you do happen to have reliable information about Sesamum radiatum, we’d love to hear from you – botanical mysteries are always worth solving together!

Sesamum

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

Pedaliaceae R. Br. - Sesame family

Genus

Sesamum L. - sesame

Species

Sesamum radiatum Schumach. - sesamum

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