Herb Robert Geranium Plants

How To Get Rid Of Herb Robert Geranium Plants: A Comprehensive Guide

Learn how to get rid of Herb Robert Geranium plants using proven methods. Explore expert tips for successful removal and preventing regrowth.

Herb Robert Geranium plants can become a nuisance in gardens and landscapes, often spreading quickly and competing with other desirable plants. If you’re facing the challenge of dealing with these invasive plants, you’re in the right place. In this guide, we’ll delve into effective methods for getting rid of Herb Robert Geranium plants and ensuring they don’t make a comeback. From manual removal to natural herbicides, we’ve got you covered with practical strategies.

Herb Robert Geranium Plants
Table Of Contents show


Dealing with unwanted Herb Robert Geranium plants requires a combination of proper techniques and persistence. While these plants might seem stubborn, employing the right methods can lead to successful eradication. Whether you’re a seasoned gardener or a novice, the following guide will provide you with insights and strategies to tackle the issue head-on.

How To Get Rid Of Herb Robert Geranium Plants

Herb Robert Geranium plants can be challenging to eliminate due to their ability to spread via seeds and underground stems. However, with the right approach, you can effectively eradicate them. Here are proven methods to help you reclaim your garden:

1. Manual Removal

Manually uprooting Herb Robert Geranium plants is a labor-intensive but effective method. Using a garden trowel or fork, carefully dig around the plant’s base to ensure you remove its entire root system. Dispose of the plants in sealed bags to prevent reseeding.

2. Mulching

Mulching is a highly effective technique in the battle against Herb Robert Geranium plants. It involves the application of a substantial layer of organic material, such as wood chips, straw, or leaves, onto the soil surface around your desirable plants. This seemingly simple practice offers a multitude of benefits that contribute to the overall health and appearance of your garden.

When it comes to controlling Herb Robert Geranium plants, mulching serves as a formidable ally. The thick layer of organic mulch acts as a physical barrier, impeding the growth and spread of these invasive plants. Here’s how the process unfolds and why it’s an excellent strategy for your garden:

Creating a Protective Barrier

By evenly spreading a generous layer of mulch around the base of your desired plants, you create a protective barrier that discourages the emergence of Herb Robert Geranium plants. This barrier makes it challenging for any existing seeds to find their way to the soil, where they would otherwise germinate and take root.

Smothering Existing Growth

Mulching not only prevents new growth but also actively suppresses any existing Herb Robert Geranium plants. The layer of mulch covers the plants and their surrounding soil, cutting off their access to sunlight and air. As a result, the plants are unable to photosynthesize effectively, causing them to weaken and eventually die off.

Inhibiting Seed Germination

One of the most effective aspects of mulching is its ability to inhibit the germination of Herb Robert Geranium seeds. The thick layer of mulch acts as a physical barrier that prevents sunlight from reaching the soil’s surface. Since sunlight is essential for seed germination, this lack of exposure stifles the growth of any seeds that may be present in the soil.

Regulating Soil Moisture and Temperature

Mulching serves as a natural regulator of soil moisture and temperature. It retains moisture, preventing the soil from drying out quickly and creating an environment that’s less conducive to the establishment of Herb Robert Geranium plants. Additionally, the mulch layer acts as insulation, helping to moderate soil temperature fluctuations and creating a less favorable environment for these invasive plants.

Enhancing Soil Health

Apart from its direct impact on Herb Robert Geranium plants, mulching also benefits the overall health of your garden’s soil. As the organic mulch breaks down over time, it enriches the soil with valuable nutrients and improves its structure. This enhancement can promote the growth of your desired plants, making them more resilient against invasive species.

3. Regular Weeding

Regular weeding is an essential practice when combatting the intrusion of Herb Robert Geranium plants into your garden. This proactive approach involves the consistent removal of these invasive plants and their seedlings before they can gain a foothold and create a persistent problem. By making weeding a regular part of your gardening routine, you can effectively curb the spread of Herb Robert Geranium plants and maintain the health and beauty of your outdoor space.

The Importance of Consistent Weeding

Consistency is the key when it comes to weeding out Herb Robert Geranium plants. These plants are notorious for their rapid growth and prolific seed production. By diligently inspecting your garden on a regular basis, you can catch and address these plants at the earliest stages of growth, preventing them from maturing and producing seeds that can lead to a more extensive infestation.

Vigilant Garden Inspection

Regular weeding requires vigilant garden inspection. Take the time to walk through your garden beds and landscape areas frequently, paying close attention to any signs of new growth. Herb Robert Geranium plants often have distinctive palmately divided leaves and characteristic pink or purple flowers, making them relatively easy to identify.

Prompt Removal of Seedlings

Upon spotting any signs of Herb Robert Geranium plants or their seedlings, it’s crucial to act promptly. Use a small gardening tool, such as a trowel or hand fork, to carefully remove the young plants from the soil. Be sure to extract the plants with their root systems intact to prevent regrowth.

Preventing Seed Production

The primary goal of regular weeding is to prevent the plants from producing seeds. Herb Robert Geranium plants can generate a substantial number of seeds, each of which has the potential to contribute to a larger infestation. By removing the plants before they mature and release seeds, you significantly limit their capacity to spread.

Long-Term Impact

Consistent weeding has a long-term impact on controlling Herb Robert Geranium plants. By repeatedly removing young plants, you weaken the population and reduce the number of seeds that can replenish the infestation. Over time, this practice can lead to a noticeable reduction in the prevalence of these invasive plants in your garden.

Integrating Weeding into Your Routine

To ensure effective weeding, consider integrating it into your regular gardening routine. Set aside time each week for a thorough garden inspection, focusing on areas where Herb Robert Geranium plants are most likely to appear. This proactive approach minimizes the chances of these plants gaining a foothold and causing widespread issues.

4. Natural Herbicides

Natural herbicides offer a viable and eco-friendly option for tackling Herb Robert Geranium plants. These herbicides harness the power of naturally derived ingredients, such as vinegar, citrus oil, or clove oil, to target and damage the foliage of these invasive plants. While natural herbicides can be effective in controlling Herb Robert Geranium, it’s important to exercise caution during application, especially in proximity to desirable plants.

Harnessing Nature’s Power

Natural herbicides are a testament to the potency of natural ingredients. Vinegar, often in the form of white or apple cider vinegar, contains acetic acid that can desiccate and damage the leaves of Herb Robert Geranium plants. Citrus oil and clove oil are known for their herbicidal properties, effectively disrupting the growth and development of these invasive plants.

Effect on Foliage

When properly applied, natural herbicides can damage the foliage of Herb Robert Geranium plants. The active compounds in these herbicides interfere with the plants’ ability to photosynthesize and draw nutrients. This disruption weakens the plants and, over time, can lead to their decline and eventual demise.

Cautious Application

While natural herbicides offer a greener alternative to chemical options, they’re not without considerations. It’s important to apply these herbicides with care, particularly in areas where desirable plants are present. Natural herbicides can be non-selective, meaning they may harm not only Herb Robert Geranium plants but also surrounding plants you wish to protect.

Application Timing

Timing is crucial when using natural herbicides. Apply them during periods of active growth for Herb Robert Geranium plants, typically in spring and early summer. During this time, the plants are more susceptible to the herbicidal effects, increasing the likelihood of successful control.

Spot Treatment

To minimize the impact on desirable plants, consider spot treatment. Directly apply the natural herbicide onto the foliage of Herb Robert Geranium plants, ensuring minimal contact with surrounding plants. This approach helps contain the herbicidal effects to the target plants.

Monitoring and Follow-Up

After applying natural herbicides, monitor the treated area for results. It may take some time for the effects to become apparent. If necessary, repeat the application for more established plants or for any regrowth that occurs.

Eco-Friendly Approach

One of the significant advantages of natural herbicides is their eco-friendliness. They break down more rapidly in the environment compared to chemical herbicides, reducing the risk of long-term soil contamination.

Local Regulations and Guidelines

Before using any herbicides, including natural ones, it’s important to be aware of local regulations and guidelines. Some regions may have restrictions on the use of certain herbicides, particularly in environmentally sensitive areas.

5. Boiling Water

Boiling water is a simple yet potent method to target Herb Robert Geranium plants growing in cracks or between paving stones. Carefully pour boiling water directly onto the plants to scald and kill them.

6. Introduce Natural Predators

Introducing natural predators into your garden ecosystem is a smart and ecological approach to managing the growth of Herb Robert Geranium plants. By enlisting the help of creatures like ground beetles, you can establish a natural balance that limits the spread of these invasive plants. Understanding the role of these predators, conducting thorough research, and providing a suitable environment for them are essential steps in successfully integrating them into your garden.

Harnessing Nature’s Allies

Natural predators, such as ground beetles, play a crucial role in controlling Herb Robert Geranium plants. These insects feed on both the seeds and foliage of the invasive plants, reducing their ability to grow and reproduce. By encouraging these natural allies, you tap into a sustainable and self-regulating method of managing the infestation.

Understanding Ground Beetles

Ground beetles are a diverse group of insects known for their voracious appetites for various garden pests, including Herb Robert Geranium plants. These beetles are nocturnal hunters and are attracted to a wide range of food sources, making them effective contributors to your garden’s ecosystem.

Researching Native Predators

Before introducing any predators, conduct thorough research to identify the native ground beetles or other creatures that naturally prey on Herb Robert Geranium plants in your region. Different species of predators may be more effective in specific environments, so tailor your approach to your local conditions.

Creating an Inviting Habitat

To encourage the presence of ground beetles, provide them with a habitat that meets their needs. Ground beetles prefer moist and shaded areas, so consider incorporating moisture-retaining features like mulch or ground covers. Additionally, reduce the use of chemical pesticides, as these can harm beneficial insects like ground beetles.

Plant Diversity and Shelter

A diverse garden with a variety of plant species provides ground beetles with alternative food sources and shelter options. Native plants often attract a diverse range of insects, contributing to a thriving ecosystem that naturally regulates pest populations.

Minimize Artificial Lighting

Artificial lighting can disrupt the activities of ground beetles and other nocturnal predators. Minimize outdoor lighting at night to create a more natural environment for these insects to thrive.

Patience and Observation

Introducing natural predators requires patience and careful observation. Allow time for ground beetles to establish themselves and monitor their activities. Over time, you’ll notice a reduction in Herb Robert Geranium plants as the predators help keep their numbers in check.

Balancing Act

It’s important to note that encouraging natural predators is just one component of an overall strategy. Combining this approach with other methods, such as manual removal or mulching, enhances your chances of success in managing Herb Robert Geranium plants effectively.

7. Use Corn Gluten Meal

Corn gluten meal, a natural byproduct of corn processing, can inhibit seed germination and prevent the growth of Herb Robert Geranium plants. Apply it as directed on the packaging during the growing season.

8. Solarization

For large infested areas, solarization can be effective. Cover the area with clear plastic sheeting during the hottest months of the year. The trapped heat will kill the plants and their seeds.

9. Salt Solution

Creating a saltwater solution and spraying it on the plants can dehydrate and eventually kill Herb Robert Geranium plants. Be cautious when using this method, as excessive salt can harm the soil and other plants.

10. Collaborate with Neighbors

Since Herb Robert Geranium plants can spread, collaborating with neighbors to address the issue collectively can yield better results. Coordinate efforts to prevent reinfestation.

Herb Robert Geranium Plants

Frequently Asked Questions (FAQs)

Q: What makes Herb Robert Geranium plants difficult to control?

A: Herb Robert Geranium plants are challenging to control due to their rapid spread through both seeds and underground stems. Their ability to adapt to various environmental conditions and reproduce prolifically makes them resilient and persistent.

Q: How does manual removal work, and is it effective?

A: Manual removal involves physically uprooting the plants using a garden trowel or fork. This method can be effective, especially when combined with proper disposal practices. By ensuring you remove the entire root system, you prevent regrowth. It’s labor-intensive but particularly useful for smaller infestations.

Q: Can mulching really help in eradicating Herb Robert Geranium plants?

A: Yes, mulching is a valuable technique. Applying a thick layer of organic mulch around plants can smother existing Herb Robert Geranium plants and create an environment where they struggle to grow. Additionally, mulch inhibits sunlight penetration, reducing the chances of new plants germinating.

Q: What’s the key to successful weeding when dealing with these plants?

A: Regular weeding is crucial. Herb Robert Geranium plants produce seeds that can quickly spread. Regularly inspect your garden for any signs of new growth and promptly remove them. Consistency is vital to preventing these plants from establishing themselves.

Q: Are natural herbicides as effective as chemical ones?

A: Natural herbicides can be effective but might require more applications than chemical options. Vinegar, citrus oil, and clove oil-based herbicides can damage the foliage, but they may not penetrate the roots effectively. They are safer for the environment but might not provide instant results.

Q: How does the boiling water method work, and when is it best used?

A: Boiling water scalds and damages the foliage of Herb Robert Geranium plants. This method is most effective for plants growing in tight spots or cracks. Be cautious not to use boiling water near desirable plants, as it can harm them too.

Q: Can introducing natural predators actually control these plants?

A: Yes, introducing natural predators like ground beetles can help. Ground beetles feed on both the seeds and foliage of Herb Robert Geranium plants, limiting their growth. Creating a habitat for these predators can assist in long-term control.

Q: How does corn gluten meal prevent the growth of these plants?

A: Corn gluten meal is a natural inhibitor of seed germination. Applying it as directed during the growing season prevents Herb Robert Geranium plants from establishing themselves from seeds.

Q: What’s involved in the solarization method?

A: Solarization involves covering an infested area with clear plastic sheeting during the hottest months of the year. The trapped heat raises the soil temperature, effectively killing the plants and their seeds. This method is useful for large infestations.

Q: Is using a salt solution a safe method for eradication?

A: Using a saltwater solution can dehydrate and kill Herb Robert Geranium plants. However, excessive salt can damage the soil and harm other plants. This method should be used with caution and in moderation.

Q: How can collaborating with neighbors improve eradication efforts?

A: Collaborating with neighbors prevents the plants from spreading across property lines. By addressing the issue collectively, you can ensure a more effective and lasting control of Herb Robert Geranium plants.

Q: Can Herb Robert Geranium plants be composted safely?

A: It’s not advisable to compost these plants, as they can easily reseed and spread through compost piles. Proper disposal in sealed bags is recommended.

Q: How quickly do Herb Robert Geranium plants spread?

A: These plants are rapid spreaders, especially in optimal conditions. They can cover a considerable area within a single growing season, making timely eradication crucial.

Q: Are these plants harmful to humans?

A: While Herb Robert Geranium plants aren’t directly harmful to humans, they can be invasive and compete with desirable plants for resources, disrupting the garden ecosystem.

Q: Can chemical herbicides harm other plants?

A: Yes, chemical herbicides can harm other plants if not applied carefully. These herbicides are non-selective, meaning they can damage or kill desirable plants nearby. Natural methods are generally safer for surrounding plants.

Q: When is the best time to address Herb Robert Geranium plants?

A: The best time to tackle these plants is in spring and early summer before they produce seeds. Preventing seed formation reduces the chances of further spread.

Q: Is transplanting advisable near infested areas?

A: Transplanting near infested areas should be approached cautiously. The soil may contain seeds or root fragments that can lead to new growth. It’s safer to address the infestation first before considering transplanting.

Q: Are there any preventive measures to stop Herb Robert Geranium plants from spreading?

A: Absolutely. Regular monitoring and early intervention are key. Additionally, maintaining healthy soil and promoting desirable plants can create an environment less conducive to Herb Robert Geranium growth.

Q: Can I use a combination of different methods for better results?

A: Yes, combining methods often yields better results. For instance, you can start with manual removal, followed by mulching or applying natural herbicides. This multi-pronged approach addresses various growth stages.

Q: How can I make my garden less favorable to these plants?

A: Avoid over-watering and over-fertilizing, as these conditions can promote the growth of Herb Robert Geranium plants. Proper spacing and maintaining diverse plant species can also discourage their spread.

Q: What are some signs that Herb Robert Geranium plants are regrowing?

A: Look for new growth emerging from the base of the plant or small seedlings in the vicinity. Regular inspection helps identify these signs early, making them easier to manage.

Q: Can I use mechanical methods like mowing to control these plants?

A: While mowing can help keep these plants in check, it might not eliminate them entirely. Frequent mowing can weaken them, but combining it with other methods is more effective.

Q: Do Herb Robert Geranium plants have any beneficial qualities?

A: Despite being invasive, some people appreciate their aesthetic qualities. However, their tendency to spread rapidly can outweigh any potential benefits.

Q: Can I reuse the same area after eradicating these plants?

A: Yes, once you’ve successfully eradicated Herb Robert Geranium plants, you can reuse the area for planting other desirable plants. Just ensure that you’ve eliminated any lingering seeds or root fragments.

Q: How long does it take to completely remove these plants?

A: The time required for complete removal varies based on the infestation’s size and the methods used. Consistency and regular monitoring play a crucial role in achieving successful eradication.

Q: Are there any native plants that can outcompete Herb Robert Geranium?

A: Yes, introducing native plants that are well-adapted to your region can help establish competition for resources, making it difficult for Herb Robert Geranium plants to thrive.

Q: Can I use herbicides specifically formulated for broadleaf weeds?

A: Yes, selective herbicides designed for broadleaf weeds can be effective. However, ensure that they’re safe for use around your desirable plants and follow application instructions carefully.

Q: Can I prevent seeds from spreading during removal?

A: To prevent seeds from spreading, perform removal when the plants haven’t produced seeds yet. Bag the plants in sealed containers before disposal.

Q: How do I identify Herb Robert Geranium plants accurately?

A: Herb Robert Geranium plants have distinct five-petaled pink or purple flowers, palmately divided leaves, and a pungent odor when crushed. Proper identification is essential for effective removal.

Q: Can these plants thrive in various soil conditions?

A: Yes, Herb Robert Geranium plants can adapt to a range of soil conditions. However, improving soil health through proper maintenance can create an environment less favorable to their growth.

Q: Are there any ongoing maintenance practices to prevent regrowth?

A: Yes, regular weeding and monitoring are essential. Additionally, creating a balanced ecosystem in your garden can reduce the chances of these plants reestablishing.

Q: Can I consult local gardening experts for personalized advice?

A: Absolutely. Local gardening experts can provide insights tailored to your region’s conditions and help you devise a customized plan for effective eradication.


Removing Herb Robert Geranium plants requires a combination of strategies, persistence, and vigilance. By employing a variety of methods such as manual removal, mulching, and natural herbicides, you can regain control over your garden and prevent these invasive plants from taking over. Remember to tailor your approach to your specific situation and consult with local gardening experts if needed.