If you’re dealing with stubborn lawn weeds that just won’t quit, you’re not alone. Many homeowners struggle with weeds like clover, dandelions, and plantains that seem immune to basic lawn care. That’s where Speed Zone Weed Killer comes into play—a powerful and fast-acting formula that promises visible results in hours and lasting weed control for weeks.
Whether you’re a seasoned lawn care pro or just someone tired of battling unsightly weeds, Gordon’s SpeedZone Lawn Weed Killer offers a solution worth exploring.
The weed killer is highly concentrated, compatible with cool and warm season grasses, and kills over 100 types of broadleaf weeds. This makes it a go-to product for anyone aiming to maintain a thick, healthy lawn without the constant hassle of repeat weed treatments.
In this review, I’ll break down what makes Speed Zone Weed Killer stand out, how to mix and apply it correctly, what’s inside the bottle, and the best place to purchase it for maximum value.
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Gordon’s Speed Zone Weed Review
Here are the reasons why experienced gardeners love Speed Zone Lawn Weed Killer:
Fast-Acting Formula with Visible Results in Hours
One of the biggest selling points of Speed Zone Weed Killer is how quickly it works. Unlike many herbicides that can take days to show any effect, this product starts working in as little as 3–6 hours after application.
That means you’ll see wilting and discoloration in treated weeds the same day, which is incredibly satisfying and efficient.
The fast action is especially useful when you’re preparing your lawn for a special event or want to stay ahead of aggressive weed growth in the spring and summer.
This speed is due to a unique combination of active ingredients that target the weed’s internal systems quickly, disrupting growth and leading to visible damage fast. It’s a major time-saver for homeowners and professional landscapers alike.
Effective on Over 100 Broadleaf Weed Species
Speed Zone isn’t just fast—it’s thorough. It controls more than 100 different broadleaf weeds, including tough varieties like clover, chickweed, plantains, ground ivy, and spurge.
Whether you’re dealing with common dandelions or harder-to-kill invaders, this herbicide offers comprehensive weed management.
It’s impressive how the weed killer manages to be both broad-spectrum and selective.
It kills weeds effectively while being safe for most turfgrass species when applied correctly, so you don’t have to worry about it harming your lawn in the process. That makes it an ideal choice for homeowners looking for a reliable, do-it-all solution.
Safe for Cool and Warm Season Grasses
Another standout feature of Gordon’s Speed Zone Weed Killer is its compatibility with both cool and warm season grasses.
Whether your lawn consists of fescue, Kentucky bluegrass, or perennial ryegrass, this product can be safely used when applied according to the label.
For Southern lawns that rely on warm-season grasses like zoysia or Bermuda, proper timing and mixing are key—but the product is still effective and safe. This makes it versatile enough to use across most regions in the U.S., regardless of your local climate.
Compact Yet Powerful Concentrate
The 20-ounce bottle may look small, but don’t let that fool you. It’s a highly concentrated formula that goes a long way—covering up to 18,000 square feet depending on your mixing ratio. This makes it both cost-effective and space-saving.
You don’t need to stockpile gallons of weed killer when a small bottle of Speed Zone gets the job done with fewer applications.
The compact size also makes it ideal for homeowners who prefer not to store large jugs of chemicals. It’s easy to pour, measure, and mix without the mess or bulk.
Speed Zone Weed Mixing Instructions
To get the best results from your Speed Zone Weed product, it’s important to follow the mixing and application directions carefully. This ensures not only effective weed control but also protects your lawn and the environment from over-application or runoff.
Step-by-Step Mixing Instructions:
1. Wear Protective Gear
Before you begin, wear gloves, safety goggles, and long sleeves. Although Speed Zone is formulated for turf, it’s still a potent herbicide and should be handled with care.
2. Use a Clean Sprayer
Select a pump or backpack sprayer and make sure it’s thoroughly cleaned. Residues from other lawn products can affect the herbicide’s performance or cause unwanted reactions.
3. Add Water First
Fill your sprayer halfway with clean water before adding the concentrate. This helps prevent foaming and ensures the solution mixes evenly.
4. Measure and Add Speed Zone
For spot treatments or general lawn coverage, add the recommended amount of Speed Zone concentrate (we’ll break down exact ratios in the next section). Pour slowly and steadily to avoid spills or overuse.
5. Top Off with Water and Mix
Once the concentrate is added, fill the sprayer to the desired final volume. Secure the lid and shake or agitate the sprayer well to ensure a uniform mixture.
6. Apply Evenly to Target Areas
Spray directly on the weeds or across the lawn using a sweeping motion. For best results, apply when weeds are actively growing, and avoid mowing for at least 1-2 days after treatment.
7. Clean Equipment After Use
Always rinse your sprayer thoroughly with water after application to prevent residue buildup and cross-contamination with other lawn treatments.
Keep in mind! Timing and consistency are key—apply during dry weather with no rain forecast for at least 24 hours to allow full absorption into the weeds.
Speed Zone Weed Mixing Ratio

Getting the mixing ratio right is critical for achieving optimal results without harming your grass. Speed Zone is a concentrated formula, and a little goes a long way.
The mixing ratio varies slightly depending on your specific use case—whether you’re treating a small spot or spraying a large lawn area.
Recommended Ratios:
- For General Lawn Applications: Mix 1.1 to 1.5 fluid ounces of Speed Zone per 1 gallon of water. This amount is sufficient to treat about 1,000 square feet of lawn.
- For Spot Treatments: Use 0.55 to 0.75 fluid ounces per 1/2 gallon of water, applied directly to the target weeds. This method is ideal for isolated patches rather than full-lawn applications.
Pro Tip: Always start on the lower end of the dosage scale for warm-season grasses to avoid the risk of turf injury. Cool-season grasses can generally tolerate slightly higher concentrations.
Avoid overlapping spray patterns, and never exceed the maximum application rate listed on the label.
Shake the sprayer occasionally during application to maintain an even mixture throughout the spraying process. This ensures consistent weed control coverage across the treated area.
Speed Zone Weed Ingredients
Speed Zone owes its fast action and broad-spectrum control to a powerful combination of four active ingredients.
Each of the weed killer’s active ingredients plays a distinct role in targeting different weed types and ensuring long-lasting results.
Active Ingredients:
- 2,4-D, 2-ethylhexyl ester (28.57%)
A widely used systemic herbicide, 2,4-D targets broadleaf weeds by mimicking plant growth hormones. This causes uncontrolled growth that leads to the weed’s eventual death. - Dicamba, dimethylamine salt (1.71%)
Dicamba complements 2,4-D by providing additional systemic action, especially effective against deep-rooted perennials and hard-to-kill weed species. - MCPP-p (mecoprop-p) acid (5.88%)
This ingredient enhances the effectiveness of the formula on a broader spectrum of weeds, particularly those that are resistant to single-active formulations. - Carfentrazone-ethyl (0.62%)
Known for rapid desiccation, carfentrazone-ethyl causes quick visible damage to the weed’s foliage, often within a few hours of application. It gives Speed Zone its fast-acting edge.
Together, these ingredients create a synergistic effect, attacking the weed from multiple angles while being selective enough to spare most common turfgrasses.
Where to Buy Speed Zone Weed
Speed Zone is widely available online and at select garden centers or hardware stores.
However, for convenience, competitive pricing, and quick delivery, Amazon remains one of the most popular sources.
Purchase Gordon’s SpeedZone Lawn Weed Killer (1 Gallon) directly from Amazon by clicking on the image of the product above ⬆ or using this link.
The product is often eligible for fast shipping, and the listing typically includes detailed instructions and user reviews to help guide your purchase decision.
For larger lawns or commercial use, many lawn care professionals prefer to buy in bulk from specialty retailers or landscaping supply stores.
Just make sure the product you’re buying is labeled for your specific lawn type and local regulations, as some herbicides may have regional restrictions.
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Speed Zone Weed Killer FAQs
Q: How long does it take Speed Zone to kill weeds?
A: Speed Zone begins showing visible results in as little as 3 to 6 hours after application. Full weed control typically occurs within 7 to 14 days, depending on the weed type and environmental conditions.
Q: Can Speed Zone be used on all grass types?
A: Speed Zone is safe for use on most cool-season grasses (like fescue, bluegrass, and ryegrass) and certain warm-season grasses (like zoysia and Bermuda) when applied at the correct rate. Always check the label to verify compatibility with your lawn type.
Q: Is Speed Zone safe for pets and children?
A: Pets and children should be kept off the treated lawn until the product has fully dried, which usually takes a few hours. Once dry, the area is generally considered safe to re-enter.
Q: Can I reseed after applying Speed Zone?
A: Yes, but it’s recommended to wait at least 2 to 4 weeks after application before reseeding. This allows the herbicide to break down and reduces the risk of affecting new grass seed germination.
Q: How often can I apply Speed Zone?
A: You can apply Speed Zone up to twice per year on most turfgrasses. Avoid multiple applications within short time spans, and always follow the manufacturer’s instructions for intervals between treatments.
Conclusion
Gordon’s Speed Zone Weed is a powerhouse herbicide for homeowners and lawn care professionals who want fast, effective, and broad-spectrum weed control.
Whether you’re battling dandelions, clover, or stubborn chickweed, this product delivers visible results within hours and full control in a matter of days.
Its selective formula makes it safe for most turfgrass varieties when used as directed, and the concentrated solution means even a small bottle can go a long way.
With simple mixing instructions and easy application, it’s a practical and efficient choice for anyone serious about maintaining a weed-free lawn.
If you’re looking for a weed control solution that works fast and hits hard without damaging your grass, Speed Zone deserves a spot in your lawn care arsenal.
Summary Highlights
- Fast-acting formula: Visible weed damage within 3–6 hours of application.
- Controls 100+ weed species: Highly effective against broadleaf weeds like clover, dandelion, and ground ivy.
- Concentrated and economical: A 20-ounce bottle can treat up to 18,000 sq. ft.
- Safe for most lawns: Suitable for cool and warm season grasses when applied correctly.
- Easy to use: Simple mixing and application with standard lawn sprayers.