
Summer is in full swing, and with it comes the pesky lawn weeds that can quickly take over your lush turf.
The key to killing lawn weeds in summer is to understand their life cycle.
During the summer months, weeds are actively growing and producing seeds, which makes them even more challenging to eliminate.
To effectively kill lawn weeds, you need to target their root system, which can be as deep as 6 inches in some cases.
On a similar theme: Summer Weeds in Lawn
Understanding Lawn Weeds
Summer lawn weeds can be a real nuisance, and it's essential to know what you're dealing with. Common Summer Lawn Weeds vary by location, but some of the most troublesome ones include crabgrass, dandelions, and clover.
Crabgrass is one of the most common summer weeds, and it thrives in warm weather. It's a fast-growing annual that can quickly overtake your lawn.
Dandelions are another common weed that can be difficult to get rid of. They have a deep taproot that makes them hard to pull out completely.
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Common Lawn Weeds
Summer is here, and with it comes a whole host of pesky lawn weeds that can quickly take over your once-manicured lawn. One of the most common and troublesome summer weeds is crabgrass, which can grow in unsightly clumps and spread to take over large areas of lawns.
Crabgrass is a true summer annual, meaning it germinates in the spring and dies off with the first frost in the fall. It's a master of disguise, popping up in thinned-out areas of the lawn and sneaking into areas that have been scalped by a trimmer.
Some other common lawn weeds include white clover, ground ivy, thistle, and curly dock. White clover, in particular, is an interesting case - some people actually consider it a beneficial addition to their lawn, but it can quickly take over and become a nuisance.
Here are some of the most common lawn weeds you might encounter this summer:
- Crabgrass
- White clover
- Ground ivy
- Thistle
- Curly dock
These weeds can be a real challenge to control, but with the right strategies and techniques, you can keep your lawn looking its best all summer long.
Challenges and Risks
Lawn weeds can be a real challenge to control, especially during the hot summer months. Broadleaf weeds are often harder to kill than lawn grasses because they have larger leaves that help them store more water.
Their seeds can persist in the soil for up to 30 years, making it difficult to get rid of them completely. This is because they can produce thousands of seeds per plant.
A dull mower blade can also make your lawn more susceptible to disease and insect damage, which can further weaken the grass and make it easier for weeds to take over.
Rapid Spread and Aggressive Growth
Summer grass, also known as crabgrass, is notorious for its rapid spread and aggressive growth.
Broadleaf weeds are often hardier than lawn grasses, making them more resilient to the heat of summer. This allows them to endure the heat better than the surrounding lawn.
Its ability to produce several seeds ensures its persistence, making it a challenging weed to control.
Seeds from broadleaf weeds can persist in the soil for 30 or more years, waiting for the perfect conditions to germinate and grow.
A dull mower blade will rip and tear grass blades, opening them up to a host of potential stresses, including disease and insect damage.
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Weakening of Desirable Species

Summer grass can weaken desirable grass species like Sir Grange by competing for essential resources like water, nutrients, and sunlight.
This competition can lead to weakened and thinning turf varieties, making your lawn look unhealthy and less robust.
As summer grass spreads and establishes itself, it can deprive other grasses of these vital elements, causing them to struggle to survive.
Actively addressing summer grass infestations is crucial to ensure that your desired grass species can thrive and maintain a healthy appearance.
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Prevention and Control
Prevention is key to killing lawn weeds in summer. Regularly inspect your lawn for signs of summer grass germination, especially in late spring or early summer. Apply a preemergent herbicide designed for crabgrass control before the seeds can sprout, following the manufacturer's instructions for proper application.
Allowing summer grass to flourish without intervention creates a cycle of infestations, so act promptly and effectively to kill it. This will break the cycle and prevent future infestations, saving you from ongoing battles with this invasive weed.
Regular lawn maintenance is crucial to prevent summer grass from making a comeback. Proper mowing, watering, and fertilising practices will promote the growth of desirable grass species, making it harder for summer grass to take hold again.
For more insights, see: Kill Weeds without Killing Lawn
Prevention and Control

Prevention is the best defense against summer grass, and regular lawn maintenance is crucial to prevent it from making a comeback. Proper mowing, watering, and fertilising practices will promote the growth of desirable grass species, making it harder for summer grass to take hold again.
To prevent future infestations, act promptly and effectively to kill summer grass, breaking the cycle of infestations that can lead to recurring problems. Regularly inspect your lawn for signs of summer grass germination, especially in late spring or early summer, and apply a preemergent herbicide designed for crabgrass control before the seeds can sprout.
Implementing preemptive measures can significantly reduce the chances of a full-blown infestation. Regularly inspect and maintain your lawn to nip any weed growth in the bud and maintain a weed-free environment.
Mulching can act as a physical barrier against weed growth, suppressing summer grass and other weeds. Apply an organic mulch layer around plants and bare areas to retain soil moisture, regulate temperature, and reduce weed germination.
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For larger infestations, selective herbicides can be a valuable tool. They target specific weeds, such as summer grass, while sparing desirable grass species, and are popular for lawns with mixed weed populations. Always follow the label instructions carefully to ensure proper application and minimise environmental impact.
If you prefer to avoid synthetic herbicides, organic methods can effectively control summer grass. These include manual removal, smothering the summer grass weeds with organic mulch, or using natural herbicides derived from ingredients such as vinegar or citrus oils.
Pesticide Safety
When using pesticides, it's essential to follow all safety precautions recommended on the labels. Store pesticides and dispose of empty containers so that they are not a hazard to humans and animals and are inaccessible to children.
Always check with your county extension educator if you have any questions about pesticide safety. They can provide valuable guidance and advice.
Don't contaminate streams, ponds, or other water sources with pesticides. This can harm aquatic life and have long-term consequences for the environment.
Remember, pesticide safety is a top priority. By taking the necessary precautions, you can protect yourself, your family, and the environment.
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Weed Services
Regular mowing and watering are key to preventing weeds. Keeping your lawn healthy through these simple steps can make a big difference.
Some lawn care companies don't take weed control seriously. The best companies, however, focus on effective weed control methods.
Keeping up with regular mowing and watering is crucial to preventing weeds. This is especially important during the summer months.
At Joshua Tree, we take a customized approach to lawn care, addressing summer lawn weeds with the best possible control methods.
Eradication Methods
To effectively kill summer grass, you'll want to try a combination of eradication methods.
First, identify the type of summer grass you're dealing with, as different types require different approaches.
One effective method is to use a step-by-step approach to killing summer grass effectively, which involves regaining control over your lawn and preventing summer grass from spreading further.
To kill summer grass, you'll need to apply a non-selective herbicide directly to the affected area, making sure to follow the product's instructions.
Another approach is to use a pre-emergent herbicide to prevent summer grass from germinating in the first place.
This can be done by applying the herbicide in early spring, before the summer grass has a chance to grow.
For larger areas of summer grass, you may need to use a lawn mower or string trimmer to physically remove the unwanted growth.
Be sure to remove all debris and dispose of it properly to prevent the summer grass from spreading.
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Expert Advice
To effectively kill lawn weeds in summer, remember to identify the problem first.
Staying proactive is key, as it allows you to prevent future infestations and enjoy a weed-free lawn.
Consulting a professional can also be beneficial, especially if you're unsure about the best methods to use.
With patience and persistence, you can achieve a healthy lawn and a vibrant outdoor space throughout the summer.
Planting Sir Walter grass can also be a great option, as it's resistant to weeds and can thrive in warm weather conditions.
Frequently Asked Questions
What is the best thing to kill weeds but not grass?
For effective weed control without harming your grass, use a selective weed killer specifically designed for lawn use. This type of herbicide targets weeds while minimizing damage to your turf.
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