Garlic Mustard: Invasive, Destructive, Edible (2024)

Garlic Mustard: Invasive, Destructive, Edible (1)

Stories in Indiana

Wild garlic mustard is a highly destructive invasive species in the United States, but anyone can help stop its spread.

July 22, 2020

Garlic Mustard Fast Facts

Scientific name:Alliaria petiolata

Identification: triangular, heart-shaped leaves with toothed edges and white four-petal flowers

How it was introduced: Brought from Europe in 1800s for herbal uses and erosion control

Edible?Yes, can be harvested when young. Older plants should be cooked thoroughly due to increased toxicity.

What is garlic mustard?

Garlic mustard, originally from Europe and Asia, has become a very troublesome invasive plant across the Northeast, Midwest and Northwest of the United States.

The plant was introduced to North America in the mid 1800s for its herbal and medicinal qualities and as erosion control.

Its aliases are Poor Man’s Mustard, Hedge Garlic, Garlic Root and Jack-by-the-Hedge. It is called garlic mustard because its leaves have a garlic smell when they are crushed.

During its first year, garlic mustard leaves are rounder and take on a rosette formation at ground level. In their second year, the leaves grow up a flowering stem and become more triangular and heart-shaped with toothed edges. Small white four-petaled flowers emerge in the spring.

Like manyinvasive species, garlic mustard requires patience and persistence to get rid of.

Garlic Mustard: Invasive, Destructive, Edible (2)

Why is garlic mustard bad?

Garlic mustard is a threat to thebiodiversity (the variety of life on Earth and in a habitat)of many native ecosystems.

This plant spreads its seeds in the wind and gains a foothold in fields and forests by emerging earlier in spring than many native plants. By the time native species are ready to grow, garlic mustard has blocked their sunlight and outcompeted them for moisture and vital nutrients.

This advantage is only strengthened asclimate changecontinues to alter seasons faster than native plants can adapt. Invasive species that crowd out forest ecosystems inhibittrees, which store large amounts of carbon dioxide, from growing.

Because the understory of a forest is so important for insects and other species at the bottom of the food chain, invaders like garlic mustard can weaken the entire ecosystem.

Further, garlic mustard’s roots release chemicals that alter the important underground network of fungi that connect nutrients between native plants, inhibiting the growth of important species like trees.

Fortunately for us, we have options to rid ourselves of this pest of a plant.

Garlic Mustard: Invasive, Destructive, Edible (3)

How do you kill garlic mustard?

The ultimate goal in removing garlic mustard isto prevent seed development and spreading until the existing seed bank is depleted. Unluckily for us, this may take 2- 5 years in any confined area. Vigilance is key, as garlic mustard can sprout up even when you're sure that you've gotten rid of every last one.

The best way to get rid of garlic mustard is manually:

  • Try to pull up the plantsbeforethey set seed, because the action of yanking the plant from the ground will spread the seed.
  • A good time to pull garlic mustard is after it rains, when it’s easier to get all or most of the long tap root.
  • After you have pulled the plants, bag them up and throw them out with your garbage; do not compost.
  • For more info, see the USDA's guide to the species.

The task may seem daunting, but if you watch carefully, you will see that native plants and even tree seedlings steadily re-populate the areas where you have removed the garlic mustard. You are helping the area become healthier!

Help Our Conservation Work Go Further

Be a part of efforts to safeguard nature around the world.

Support our work

Can you eat garlic mustard?

Yes, garlic mustard is edible. Harvest young, when it’s less bitter (older plants need to be cooked thoroughly as they contain cyanide). Adds spice to dips, sauces, salads, and stir fries. Be sure to harvest the whole plant, roots and all, to help prevent its spread. Pull up any nearby plants you don’t intend to eat and put in a bag (to prevent seeds from falling) and throw away. Clean off boots and clothes to further reduce the spread.

You might enjoy...

Calculate Your Carbon Footprint What's your carbon footprint? Use this interactive calculator to find out—and take action. Tree of Heaven Though its name makes it sound heavenly, the invasive tree of heaven is no angel. Learn all about this devilish invader.
Garlic Mustard: Invasive, Destructive, Edible (2024)


Top Articles
Latest Posts
Article information

Author: Manual Maggio

Last Updated:

Views: 5283

Rating: 4.9 / 5 (69 voted)

Reviews: 92% of readers found this page helpful

Author information

Name: Manual Maggio

Birthday: 1998-01-20

Address: 359 Kelvin Stream, Lake Eldonview, MT 33517-1242

Phone: +577037762465

Job: Product Hospitality Supervisor

Hobby: Gardening, Web surfing, Video gaming, Amateur radio, Flag Football, Reading, Table tennis

Introduction: My name is Manual Maggio, I am a thankful, tender, adventurous, delightful, fantastic, proud, graceful person who loves writing and wants to share my knowledge and understanding with you.