Can RoundUp Kill Asian Jasmine? Debunking Myths and Understanding Reality

Asiatic jasmine (Trachelospermum asiaticum), also known as dwarf jasmine or star jasmine, is a popular choice among gardeners and landscapers for its attractive foliage and sweet fragrance. However, like any other plant, it is susceptible to various threats, including weeds. RoundUp, a widely used herbicide containing the active ingredient glyphosate, has raised concerns among gardeners about its potential impact on Asiatic Jasmine. In this article, we will delve into the topic to debunk myths and shed light on the reality of RoundUp’s effects on Asiatic Jasmine.

The Science Behind RoundUp and Glyphosate

Before discussing the potential effects of RoundUp on Asiatic Jasmine, it is important to understand the science behind the herbicide and its active ingredient, glyphosate. Glyphosate is a broad-spectrum herbicide that works by inhibiting an enzyme essential for plant growth. It is designed to target and kill unwanted plants, commonly known as weeds. Glyphosate’s mode of action makes it effective against a wide range of plants, including both broadleaf and grass weeds.
However, the selectivity of RoundUp, the commercial formulation of glyphosate, is controversial. While it primarily targets weeds, there have been concerns about its potential impact on desirable plants such as Asiatic jasmine. Let’s examine whether RoundUp can actually harm Asiatic Jasmine or whether this is an unfounded claim.

Risk of RoundUp on Asiatic Jasmine

Contrary to popular belief, RoundUp is unlikely to cause significant damage to established Asiatic Jasmine plants when used as directed. The key is to follow the manufacturer’s instructions and use RoundUp judiciously. Glyphosate is a systemic herbicide, which means it is absorbed by the foliage and moves throughout the plant’s system, including the roots. However, Asiatic jasmine has a robust root system and can tolerate glyphosate applications when used properly.
It is important to note that glyphosate is most effective when applied to actively growing plants. Therefore, it is recommended that RoundUp not be applied to Asiatic Jasmine during dormant periods or when the plant is stressed. In addition, to minimize the risk of unintended damage, it is advisable to use shielded sprayers or to apply the herbicide in a targeted spot application method, carefully avoiding contact with the foliage of desirable plants.

Precautions and Best Practices

While RoundUp can be used safely around Asiatic Jasmine, it is important to take precautions and follow best practices to minimize potential risks. Here are some guidelines to follow:

1. Read and Follow the Label: Always read and carefully follow the instructions on the RoundUp product label. The label contains valuable information on dosage, application methods, and safety precautions.

2. Spot Treatment: Instead of applying RoundUp indiscriminately, use a spot treatment. This approach allows you to target specific weeds while minimizing contact with Asian jasmine and other desirable plants.
3. Timing: Apply RoundUp when Asiatic Jasmine is actively growing and not under stress, typically during the spring and summer months. Avoid applying the herbicide during dormancy or when the plant is experiencing adverse environmental conditions.

4. Protect surrounding plants: If you have other plants in close proximity to Asiatic Jasmine, use physical barriers such as cardboard or plastic shields to prevent overspray or drift onto desirable plants.

Alternative weed control methods

If you prefer to avoid herbicides altogether or have concerns about using RoundUp, there are alternative weed control methods that can be effective in controlling weeds around Asiatic jasmine. These methods include:

1. Mulching: Applying a layer of organic mulch, such as wood chips or straw, around Asiatic jasmine can help suppress weed growth by blocking sunlight and preventing weed seeds from germinating.

2. Hand Pulling: Inspect your garden regularly and remove weeds by hand, being careful not to disturb the roots of Asiatic jasmine.
3. Smothering: For stubborn weeds, you can use smothering techniques by covering the affected areas with landscape fabric or heavy cardboard, effectively depriving the weeds of sunlight and airflow.

4. Weed Torch: Using a weed torch or flame weeder can be an effective way to spot treat weeds. The high heat destroys the cellular structure of the weed, causing it to wither and die.

By using these alternative weed control methods, you can maintain a weed-free environment around your Asiatic Jasmine without relying solely on herbicides such as RoundUp.


Based on available scientific information, RoundUp is unlikely to cause significant harm to established Asian jasmine plants when used according to directions. However, it is important to exercise caution and follow best practices to minimize potential risks. Spot treatment and proper timing are key factors in reducing the risk of unintentional damage to desirable plants. If you are concerned about using herbicides, there are alternative weed control methods that can effectively manage weeds around Asiatic Jasmine. By combining these methods with proper care and maintenance, you can enjoy the beauty and fragrance of your Asiatic Jasmine while keeping unwanted weeds at bay.

Remember, it is always advisable to consult with local gardening experts or extension services for specific recommendations and guidance tailored to your region and individual circumstances.


Will RoundUp kill Asiatic jasmine?

Yes, RoundUp can kill Asiatic jasmine when applied directly to the plant. RoundUp contains glyphosate, which is a broad-spectrum herbicide that targets and kills most types of plants, including Asiatic jasmine.

How does RoundUp kill plants?

RoundUp works by inhibiting an enzyme called EPSP synthase, which is essential for the production of certain amino acids in plants. Without these amino acids, the plants are unable to grow and eventually die.

Are there any precautions to take when using RoundUp near Asiatic jasmine?

Yes, it is important to take precautions when using RoundUp near Asiatic jasmine or any other desirable plants. RoundUp is a non-selective herbicide, meaning it can harm or kill any plant it comes into contact with. To protect Asiatic jasmine or other nearby plants, you should avoid spraying RoundUp directly on them and use targeted application methods, such as spot treatment or shielded spraying.

Are there alternative methods to control weeds around Asiatic jasmine?

Yes, there are alternative methods to control weeds around Asiatic jasmine. Some options include manual weed removal by hand-pulling or using gardening tools, mulching to smother weed growth, and applying pre-emergent herbicides specifically formulated for controlling weeds without harming Asiatic jasmine.

Can RoundUp pose any risks to the environment or human health?

RoundUp has been a subject of debate regarding its potential risks to the environment and human health. Glyphosate, the active ingredient in RoundUp, has been classified as “probably carcinogenic to humans” by the International Agency for Research on Cancer (IARC). Additionally, there have been concerns about its potential impact on non-target organisms and the development of herbicide-resistant weeds. It is important to follow the manufacturer’s instructions and safety guidelines when using RoundUp or any other herbicide.