North America Non-native Plant

Sesbania Paulensis

Botanical name: Sesbania paulensis

USDA symbol: SEPA14

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

Sesbania paulensis: The Mystery Plant That’s Puzzling Gardeners Ever stumbled across a plant name that makes you scratch your head? Meet Sesbania paulensis, a botanical enigma that’s got even seasoned gardeners doing double-takes. This obscure member of the legume family is so rare in cultivation that finding reliable information about ...

Sesbania paulensis: The Mystery Plant That’s Puzzling Gardeners

Ever stumbled across a plant name that makes you scratch your head? Meet Sesbania paulensis, a botanical enigma that’s got even seasoned gardeners doing double-takes. This obscure member of the legume family is so rare in cultivation that finding reliable information about it feels like searching for a needle in a haystack.

What We Know (And Don’t Know) About This Mysterious Plant

Here’s the thing about Sesbania paulensis – it’s what we might call a ghost plant in the gardening world. While it belongs to the Sesbania genus, which includes some well-known tropical and subtropical shrubs, this particular species is practically invisible in horticultural circles.

Based on its scientific name, we can make an educated guess that it has some connection to the São Paulo region of Brazil (that’s what paulensis typically indicates). However, concrete information about its native range, appearance, or growing habits is frustratingly scarce.

Should You Try Growing Sesbania paulensis?

Here’s some friendly advice: probably not. And it’s not because this plant is invasive or problematic – it’s simply because there’s not enough reliable information available to help you succeed. Gardening is challenging enough when you have good growing guides; trying to cultivate a plant that’s essentially undocumented is like trying to bake a cake without a recipe.

Better Alternatives in the Sesbania Family

If you’re drawn to the idea of growing a Sesbania species, consider these better-documented alternatives:

  • Sesbania grandiflora – Known as vegetable hummingbird or agati, this species produces edible flowers and pods
  • Sesbania punicea – Coffee bean tree (though note this one can be invasive in some areas)
  • Sesbania drummondii – Poison bean, native to parts of North America

The Takeaway for Native Plant Enthusiasts

Sometimes the most honest thing a gardening expert can tell you is we just don’t know enough. Sesbania paulensis falls into that category. Rather than gambling with an unknown quantity, focus your energy on well-documented native plants that will give you the best chance of success.

If you’re specifically interested in leguminous plants for your garden, research native alternatives in your region that offer similar benefits like nitrogen fixation, wildlife habitat, and attractive flowers. Your local native plant society or extension office can point you toward species that are both ecologically beneficial and likely to thrive in your specific conditions.

Remember, successful native gardening is about working with plants that have a proven track record in cultivation. Save the botanical detective work for the professionals, and choose plants that will reward your efforts with healthy growth and ecological benefits.

Sesbania Paulensis

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Sesbania Scop. - riverhemp

Species

Sesbania paulensis Barb. Rodr.

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