North America Non-native Plant

Egyptian Riverhemp

Botanical name: Sesbania sesban var. sesban

USDA symbol: SESES3

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

Synonyms: Sesbania aegyptiaca (Poir.) Pers. (SEAE2)   

Egyptian Riverhemp: A Fast-Growing Tropical Wonder for Your Garden Looking for a plant that grows faster than your weekend to-do list? Meet Egyptian riverhemp (Sesbania sesban var. sesban), a vigorous tropical shrub that might just be the speedy solution your garden needs – or the enthusiastic guest that overstays its ...

Egyptian Riverhemp: A Fast-Growing Tropical Wonder for Your Garden

Looking for a plant that grows faster than your weekend to-do list? Meet Egyptian riverhemp (Sesbania sesban var. sesban), a vigorous tropical shrub that might just be the speedy solution your garden needs – or the enthusiastic guest that overstays its welcome, depending on your perspective!

What Exactly is Egyptian Riverhemp?

Egyptian riverhemp is a fast-growing member of the legume family, originally hailing from tropical Africa, particularly around the Nile Valley region. You might also see it listed under its scientific synonym, Sesbania aegyptiaca. This isn’t your typical backyard shrub – it’s more like the overachiever of the plant world, capable of shooting up several feet in a single growing season.

The Good, The Fast, and The Feathery

Here’s what makes Egyptian riverhemp appealing to gardeners:

  • Lightning-fast growth: Perfect if you need quick screening or windbreak protection
  • Nitrogen-fixing superpowers: Like other legumes, it actually improves soil fertility
  • Attractive flowers: Produces cheerful yellow pea-like blooms that pollinators adore
  • Drought tolerance: Once established, it’s quite forgiving of dry conditions
  • Feathery foliage: The compound leaves create an elegant, airy texture

Where Does Egyptian Riverhemp Fit in Your Garden?

This plant works best in tropical and subtropical landscapes (USDA zones 9-11). It’s particularly useful for:

  • Quick privacy screens or windbreaks
  • Erosion control on slopes
  • Permaculture food forests as a support species
  • Restoration projects where fast establishment is key

However, keep in mind that Egyptian riverhemp isn’t native to most regions outside of tropical Africa. While it can be useful, consider exploring native alternatives that provide similar benefits while supporting local ecosystems.

Growing Egyptian Riverhemp Successfully

If you decide this fast-growing shrub is right for your space, here’s how to keep it happy:

Light Requirements: Full sun is best – this plant loves basking in bright light all day long.

Soil Needs: Remarkably unfussy about soil quality. It actually thrives in poor soils and can help improve them over time thanks to its nitrogen-fixing abilities.

Watering: Water regularly during establishment, but once settled in, it’s quite drought-tolerant. Avoid overwatering, as soggy conditions aren’t its favorite.

Space Planning: Give it room to spread – this isn’t a plant that stays put in a tiny corner. It can reach 6-12 feet tall and wide when happy.

Planting and Care Tips

Egyptian riverhemp is refreshingly easy to grow from seed. Here’s your game plan:

  • Soak seeds overnight before planting to improve germination
  • Plant in spring after the last frost danger has passed
  • Space plants at least 6 feet apart – trust us on this one
  • Mulch around young plants to retain moisture and suppress weeds
  • Prune regularly to maintain desired size and shape

A Word of Caution

While Egyptian riverhemp has its merits, remember that fast growth can sometimes mean aggressive spreading. Keep an eye on it and be prepared to manage its enthusiasm. Always check with your local extension office about any regional concerns before planting non-native species.

The Bottom Line

Egyptian riverhemp can be a useful addition to tropical gardens, especially when you need quick results for screening, erosion control, or soil improvement. Its pollinator-friendly flowers and nitrogen-fixing abilities are definite perks. However, as with any non-native plant, it’s worth exploring whether native alternatives might serve your garden goals just as well while providing better ecological benefits.

If you do choose to grow Egyptian riverhemp, embrace its speedy nature but keep those pruning shears handy – this is one plant that definitely benefits from a firm but friendly hand!

Egyptian Riverhemp

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 sesban (L.) Merr. - Egyptian riverhemp

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