North America Non-native Plant

Sesame

Botanical name: Sesamum

USDA symbol: SESAM

Life cycle: annual

Habit: forb

Native status: Non-native, reproduces and persists in the wild in the lower 48 states âš˜ Non-native, reproduces and persists in the wild in Puerto Rico âš˜ Non-native, reproduces and persists in the wild in the U.S. Virgin Islands  

Growing Sesame: An Annual Herb with Ancient Roots If you’ve ever sprinkled sesame seeds on a bagel, you might be surprised to learn that you can grow your own sesame plants right in your backyard! Sesamum, commonly known as sesame, is an annual forb that has been cultivating fascination (and ...

Growing Sesame: An Annual Herb with Ancient Roots

If you’ve ever sprinkled sesame seeds on a bagel, you might be surprised to learn that you can grow your own sesame plants right in your backyard! Sesamum, commonly known as sesame, is an annual forb that has been cultivating fascination (and flavor) for thousands of years. While it’s not native to North America, this herbaceous plant has found its way into gardens across the United States, offering both ornamental appeal and edible rewards.

What Is Sesame?

Sesame is an annual forb, meaning it’s a non-woody herbaceous plant that completes its life cycle in one growing season. Unlike trees or shrubs, sesame lacks significant woody tissue and produces those famous seeds we know and love within a single year. The plant grows upright with heart-shaped leaves and produces small, tubular flowers that range from white to pale pink.

Native Status and Distribution

Let’s address the elephant in the room: sesame isn’t native to North America. Originally hailing from Africa and India, this plant has been introduced to various regions and now reproduces spontaneously in the wild across several states. You’ll find established populations in Alabama, California, Florida, Georgia, Louisiana, Massachusetts, Missouri, New York, Ohio, Pennsylvania, South Carolina, Texas, Wisconsin, Puerto Rico, and the U.S. Virgin Islands.

While sesame has naturalized in these areas, it’s worth considering native alternatives that can provide similar benefits to local ecosystems. Native annual wildflowers or herbs might be better choices for supporting local wildlife and maintaining ecological balance.

Why Grow Sesame?

Despite its non-native status, sesame offers several appealing qualities for gardeners:

  • Edible harvest: Grow your own sesame seeds for cooking and baking
  • Pollinator appeal: The small flowers attract bees and other beneficial insects
  • Cultural significance: Connect with an ancient crop that’s been cultivated for over 3,000 years
  • Ornamental value: Attractive foliage and delicate flowers add texture to garden beds
  • Low maintenance: Once established, sesame is relatively easy to grow

Growing Conditions and Care

Sesame thrives in warm, sunny conditions and isn’t particularly fussy about soil types, though it does prefer well-drained ground. Here’s what you need to know:

USDA Hardiness Zones

As an annual, sesame can be grown in USDA zones 4-11, but it requires a long, warm growing season to produce mature seeds. Southern gardeners will have the best success, while northern gardeners should start seeds indoors or choose quick-maturing varieties.

Planting Tips

  • Direct seed after the last frost when soil temperatures reach at least 70°F
  • Choose a location with full sun exposure
  • Plant seeds ¼ to ½ inch deep in well-draining soil
  • Space plants 6-12 inches apart
  • Germination typically occurs within 7-14 days

Care Requirements

  • Water regularly but avoid overwatering, as sesame is somewhat drought-tolerant once established
  • Minimal fertilization needed in average garden soil
  • Watch for the characteristic seed pods that develop after flowering
  • Harvest timing is crucial – collect pods just before they begin to shatter open

Garden Design Ideas

Sesame works well in several garden settings:

  • Herb gardens: Plant alongside other culinary herbs for a diverse harvest
  • Vegetable gardens: Include in your edible landscape for homegrown seeds
  • Annual borders: Use as a textural element with its upright growth habit
  • Container gardens: Grow in large pots on patios or decks

A Word About Native Alternatives

While sesame can be a fun addition to your garden, consider incorporating native annual plants that provide similar benefits while supporting local ecosystems. Native wildflowers, herbs, or grasses can offer pollinator resources and maintain the ecological integrity of your region.

The Bottom Line

Growing sesame can be a rewarding experience, especially if you enjoy experimenting with unusual edible plants or connecting with agricultural history. Just remember that this non-native annual requires warm conditions and careful timing for successful seed production. Whether you’re motivated by culinary curiosity or simply want to try something different in your garden, sesame offers a unique growing experience – just don’t forget to explore native options too!

Sesame

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

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