How to Get Rid of Monkshood

How to Get Rid of Monkshood

Monkshood (Aconitum spp.) is a strikingly beautiful but highly toxic plant that can be a menace in your garden or landscape. Its vibrant blue, helmet-shaped flowers and lush green foliage may deceive you into thinking it’s harmless, but every part of this plant contains deadly alkaloids that can be fatal if ingested or even handled improperly. If you find monkshood invading your garden and want to get rid of it safely, read on for effective methods and precautions.

There are 8 Effective Methods to Getting Rid of Monkshood

Identify the Monkshood Plant

Before you can effectively eliminate monkshood from your garden, it’s crucial to correctly identify it. Monkshood is characterized by tall, erect stems with deeply lobed leaves and distinct, hood-like flowers that give it its name. Familiarize yourself with its appearance and distinguish it from other similar-looking plants to avoid accidental removal of desirable species.

Wear Protective Gear

Monkshood is highly toxic through skin contact, and its roots and leaves can be lethal if ingested. Prior to attempting to remove monkshood, don protective gear such as gloves, long sleeves, and eye protection. Consider using a mask to prevent inhaling any airborne particles during removal.

Manual Removal

If the infestation is relatively small, manual removal can be an effective option. Use a garden spade or shovel to dig out the entire plant, including its roots. Be extremely cautious not to break any part of the plant during removal, as this can release toxic compounds into the soil.

Chemical Control

For larger infestations, chemical control may be necessary. Select a herbicide that is effective against monkshood and follow the manufacturer’s instructions carefully. Glyphosate-based herbicides are often recommended for eliminating monkshood. Apply the herbicide to the leaves and stems of the plant, avoiding contact with desirable plants.

Repeat Applications

Monkshood can be persistent, and multiple herbicide applications may be required to completely eradicate it. Follow up on the initial treatment as necessary, typically a few weeks apart, until the monkshood no longer regrows.

Dispose of Monkshood Properly

After removing or treating monkshood, it’s essential to dispose of all plant parts safely. Seal them in a plastic bag and dispose of them in the trash. Do not compost monkshood, as it may contaminate your compost with toxic alkaloids.

Monitor Your Garden

Even after successfully removing monkshood, it’s crucial to remain vigilant. Keep an eye out for any new growth, as even a small piece of root left in the soil can lead to a resurgence of the plant. Promptly remove any new shoots that appear.

Prevent Future Infestations

To prevent monkshood from returning, maintain good garden hygiene. Regularly inspect your garden for any signs of new plants, and promptly remove them. Additionally, consider introducing dense groundcovers or other desirable plants to outcompete monkshood and reduce the chances of reinfestation.


What makes monkshood so dangerous, and why is it important to get rid of it?

Monkshood (Aconitum spp.) is dangerous due to the presence of highly toxic alkaloids in all parts of the plant, including the leaves, stems, and roots. These toxins can cause severe illness or even death if ingested or if there is contact with the skin. It’s essential to get rid of monkshood to protect yourself, children, pets, and wildlife from accidental poisoning. Additionally, removing monkshood can prevent its aggressive growth from crowding out desirable plants in your garden or landscape.

Can I remove monkshood without using chemicals, and if so, how?

Yes, you can remove monkshood manually without using chemicals, but it requires careful handling and protective gear. Wear gloves, long sleeves, and eye protection when handling monkshood. Use a garden spade or shovel to dig out the entire plant, including the roots. Take care not to break the plant, as this can release toxins into the soil. Dispose of the removed plant parts in the trash, not in your compost. Regularly monitor the area for any regrowth and promptly remove any new shoots.

What herbicide should I use to eliminate monkshood, and how should I apply it?

Glyphosate-based herbicides are often recommended for eliminating monkshood. Follow these steps for effective herbicide application:

Wear protective gear: 

Put on gloves, long sleeves, and eye protection. Use a mask if working in windy conditions to avoid inhaling herbicide spray.

Select the right time: 

Apply the herbicide during the monkshood’s active growth period, typically in late spring or early summer.

Mix and apply: 

Follow the manufacturer’s instructions for mixing the herbicide. Spray the herbicide directly onto the leaves and stems of the monkshood, taking care to avoid contacting desirable plants. Be thorough in your coverage.

Repeat applications: 

Monkshood may require multiple herbicide applications to ensure complete eradication. Follow up as necessary, typically a few weeks apart, until no further regrowth occurs.

Dispose of equipment: 

Rinse your sprayer thoroughly after use, and dispose of any unused herbicide according to local regulations.


Getting rid of monkshood from your garden requires careful identification, protective gear, and the use of appropriate removal methods. Whether you choose manual removal or chemical control, it’s essential to prioritize safety and thorough disposal to prevent harm to yourself and the environment. By following these steps and remaining vigilant, you can successfully eliminate monkshood and maintain a healthy garden.

Heiron Chan

Heiron Chan

Heiron is the driver behind the operations and sales as well as delivery of the begardenly experience. He is the solar-powered, passionate, and incessant energy behind the existence of this company and the unwavering support of the business. His love for vegetables can only be matched by his adoration of fish, and in his spare time, he can be found gazing lovingly at his pet guppies.

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