Mimosa Hostilis: What It Is, Uses, Benefits and Origins

Few plants go by as many names or serve as many purposes as Mimosa hostilis. Dyers know it for the deep purples and browns its bark gives to cotton and leather. Soap makers and cosmetic brands know it as tepezcohuite. Growers know it as a hardy tree that tolerates dry, poor soil.

This guide covers the essentials: what the plant is, where it comes from, how to recognize it, what its root bark is used for, and what to look for when you buy it.

What is Mimosa hostilis?

Mimosa hostilis is a perennial shrub or small tree in the legume family (Fabaceae). Its accepted botanical name today is Mimosa tenuiflora; “Mimosa hostilis” is an older synonym that stayed in everyday and commercial use.

It is a pioneer species. It settles quickly on dry, poor or disturbed ground, improves the soil by fixing nitrogen, and resprouts after being cut or burned. That resilience has made it useful to rural communities in Mexico and Brazil for generations.

Names and terms: tepezcohuite, jurema preta and MHRB

The species has several names, while MHRB is an abbreviation for its root bark. These terms commonly appear in botanical writing and product listings:

• Mimosa tenuiflora: the current scientific name.
• Mimosa hostilis: the older scientific name, still widely used in the United States.
• Tepezcohuite: the common name in Mexico, especially for skin care products.
• Jurema preta: the common name in Brazil.
• MHRB: short for Mimosa hostilis root bark.

It is a different plant from Mimosa pudica, the small “sensitive plant” whose leaves fold when touched. We compare the two in Mimosa pudica vs. Mimosa hostilis.

Where does Mimosa hostilis grow?

The species is native to a wide band of the Americas, from southern Mexico through parts of Central America, Colombia and Venezuela to northeastern Brazil. Two well-known regions of origin are the states of Chiapas and Oaxaca in Mexico and the dry caatinga scrubland of northeastern Brazil.

Bark from the two origins is the same species, but growing conditions and harvesting traditions differ. Our article on Mexican Mimosa hostilis from Chiapas and Oaxaca explains what sets that origin apart.

How to identify the Mimosa hostilis tree

The tree can reach about 8 meters (26 feet) in height. These features help recognize it:

• Bark: dark brown to grey on the outside, rough and often split lengthwise, with a reddish-brown inner layer.
• Leaves: finely divided and fern-like, made up of many small leaflets.
• Flowers: white, fragrant and arranged in loose cylindrical spikes.
• Pods: small, flat seed pods that break into segments when ripe.
• Thorns: short and stiff, along the branches.

Mimosa hostilis root bark and its forms

The root bark is rich in tannins and in the natural pigments that give it its characteristic purple-red color.

At MHRBUSA™, root bark is available in three forms:

• Whole: strips of bark as harvested and dried. It stores well and lets you see exactly what you are buying.
• Shredded: bark broken into fibers, a practical middle ground between whole bark and powder.
• Powder: finely ground bark, which releases its color quickly. If you start from whole bark, see how to make Mimosa hostilis bark powder.

What the bark contains

Studies of the bark identify tannins and other plant compounds, including flavonoids and saponins. The tannins matter most in practice: they help color bind to fibers, and they are why the bark has traditionally been used on leather.

What is Mimosa hostilis used for?

Natural dyeing and leatherwork

The root bark is widely used as a natural dye. It can color cotton, wool, silk and leather in shades that run from pink and purple to deep reddish brown, depending on the fiber, the amount of bark and the mordant. Our step-by-step guide to natural dyeing with Mimosa hostilis walks through the process.

Soap making and cosmetics

Powdered bark is added to handmade soaps, masks and creams, both for its color and because tepezcohuite has a long tradition as a cosmetic ingredient in Mexico. Makers who sell these products are responsible for meeting cosmetic labeling and safety rules.

Traditional skin care

In Mexico, tepezcohuite bark has been used on the skin for generations, and that tradition is the origin of the creams and soaps sold under its name today. Modern research on the subject is still limited, so it is best understood as a traditional cosmetic ingredient rather than a treatment. We look at it in more detail in Mimosa hostilis benefits for skin care.

Land restoration, fodder and wood

Where it grows natively, the tree itself is as useful as its bark. It is planted to restore degraded land, its leaves and pods feed livestock in the dry season, and its dense wood is used for fence posts, firewood and charcoal.

Benefits of Mimosa hostilis

What makes the plant valuable depends on who is using it:

• For dyers and leatherworkers: a single natural material that provides both color and tannin.
• For soap and cosmetic makers: a plant ingredient with a recognized name and a long tradition of use.
• For growers and land managers: a hardy, fast-growing tree that improves poor soil.
• For craftspeople in general: a product that stores well and is easy to work with in whole, shredded or powdered form.

Mimosa hostilis root bark is sold as a botanical material for dyeing, crafts and cosmetic manufacturing.

Can you grow Mimosa hostilis?

Yes, in the right climate. The tree grows quickly from seed in warm conditions and tolerates drought and poor soil, but it is sensitive to frost. In most of the United States that means growing it in a container or greenhouse rather than outdoors year-round.

Germination, soil and timing are covered in our complete growing guide.

Is Mimosa hostilis legal in the United States?

Mimosa hostilis is not listed as a controlled plant under U.S. federal law, and its root bark is sold for uses such as natural dyeing, soap making and cosmetics. Some naturally occurring substances in the plant are federally regulated, and state rules and intended use also matter. Our guide to the legal status of Mimosa hostilis in the United States explains the details.

How to choose quality Mimosa hostilis root bark

Quality can vary between sellers. Before buying, check for:

• Inner root bark only: not trunk bark or an unspecified mix.
• A stated origin: Brazil or Mexico, named clearly.
• Color: a deep purple-red to pinkish-brown tone, not grey or dull brown.
• Clean, dry material: no mold, no musty smell, little dust or debris.
• A seller you can reach: clear shipping and return policies and real customer service.

At MHRBUSA™ we stock Brazilian and Mexican inner root bark in whole, shredded and powdered form, shipped from within the United States. You can see the full range in our Mimosa hostilis root bark category.

Frequently asked questions

Last reviewed: October 2026.