Ever look at your beautiful green lawn, only to see annoying dandelions or stubborn clover popping up? It’s frustrating! You want a lush, perfect yard, but those pesky weeds fight back every spring. Choosing the right lawn fertilizer that also tackles weeds feels like a complicated puzzle. Do you pick the fast-acting weed killer or the slow-release green-up formula? Many products promise the world, but few actually deliver a weed-free, vibrant carpet of grass.
This confusion stops here. We cut through the confusing labels and chemical jargon. By the end of this guide, you will know exactly which combination fertilizer is your lawn’s best friend. You will learn the secrets to banishing those unwanted guests forever while feeding your turf the nutrients it craves. Get ready to transform your yard from patchy and weedy to the envy of the neighborhood. Let’s dive into finding the ultimate lawn fertilizer to kill weeds!
Top Lawn Fertilizer To Kill Weeds Recommendations
- Up to 2X more powerful dandelion and clover control (vs. previous formula)
- Clears out dandelions and clover—satisfaction guaranteed
- Weedgrip Technology grips the weeds you see—and the ones you don't
- Scotts most powerful weed and feed
- Feeds to thicken lawns and crowd out weeds
- Up to 2X more powerful dandelion and clover control (vs. previous formula)
- Clears out dandelions and clover—satisfaction guaranteed
- Weedgrip Technology grips the weeds you see—and the ones you don't
- Scotts most powerful weed and feed
- Feeds to thicken lawns and crowd out weeds
- Stops crabgrass before it invades and protects your lawn all season long
- Lawn fertilizer feeds for a fast green-up after winter and builds strong, deep grass roots
- Rain, snow or freezing conditions after application won't affect product performance
- For best results, lawn should receive 1/4 to 1/2 inch of water from rainfall or watering within 2-3 days after application
- Fertilizes in 24 hours while controlling for weeds
- Kills dandelions, clover and other major lawn weeds
- Other weeds include buckhorn, chickweed, ground ivy, henbit, knotweed, lambsquarters, oxalis, pigweed, plantain, poison ivy, ragweed, and spurge
- Easy to use, simply attach hose and spray
- Spray when weeds are actively growing
- KILLS WEEDS, NOT THE LAWN: Won’t harm lawns when used as directed – kills more than 200 types of weeds as listed
- CONTROLS ALL MAJOR BROADLEAF WEEDS: Controls dandelion, chickweed and clover (see product label for complete list)
- KILLS THE ROOT: See overnight results
- RAINPROOF: Rainfall or watering 6 hours after application will not wash away effectiveness
- COVERAGE: 32 ounce bottle treats up to 16,000 square feet.
- KILLS TOUGH WEEDS: Apply our revolutionary 5-in-1 Weed and Feed formula to actively growing turf to target over 200 listed types of weeds, including hard-to-kill weeds like dandelions, clovers, and black medic
- PREVENTS NEW WEEDS UP TO 6 MONTHS: Forms a protective soil barrier that prevents listed weeds from emerging for up to 6 months; Apply in spring or early summer, even if Crabgrass and weeds have already sprouted
- KILLS LARGE CRABGRASS: Contains four proven weed killers to control crabgrass, killing to the root; Crabgrass starts to turn purple in 3 days, that's the sign it's working; Creates a long-lasting barrier that helps stop crabgrass from returning for up to 6 months
- FEEDS & GREENS: Fertilizer feeds and greens your lawn for up to 3 months to promote thicker, healthier turf; Apply granules with a broadcast or drop spreader for smooth, even coverage across established lawns
- GET MORE FROM THE BLUE BOTTLE: From simple spot treatments to season-long protection, BioAdvanced's science-based solutions make it simple to control unsightly weeds, feed your lawn, and protect against damaging diseases without harming the lawn
- 10 MINUTE LAWN CARE: A 32 fl. oz. bottle of Scotts Turf Builder Liquid Lawn Food Plus Weed Control connects to your hose and provides 2,000 sq. ft. of weed control for lawns in 10 minutes
- LESS PLASTIC WASTE: The reusable applicator is designed to be used with our refill bottles of fertilizer plus lawn weed killer (sold separately)
- 2-IN-1 FORMULA: Our dual-action weed and feed for lawns controls stubborn weeds like dandelions and clover while feeding your grass to build a thicker, greener lawn that crowds out future weeds
- EASY TO USE: The translucent lawn food plus weed killer spray bottle lets you see exactly how much product you’re using as you spray, eliminating guesswork
- USE ON MOST LAWNS: This fertilizer plus weed killer for lawns is labeled for use on most common lawns, including bluegrass, fescue, ryegrass, bahiagrass, bermudagrass (common and hybrid), centipedegrass, and zoysiagrass when weeds are actively growing
- WEED KILLER SPRAY FOR LAWNS: With a simple hose-end application, kill weeds in your lawn, including dandelions, chickweed, clover, crabgrass and foxtail with Ortho WeedClear Lawn Weed Killer Ready-to-Spray
- FAST-ACTING WEED CONTROL: This weed killer hose sprayer kills listed weeds like crabgrass, dandelion, clover, chickweed and creeping charlie down to the root and gets results with 1 application
- COVERAGE: This 32 fl. oz. container of Ortho WeedClear Lawn Weed Killer Ready-to-Spray provides up to 5,000 sq. ft. of lawn care
- HOW TO USE: Apply to listed lawn weeds that are young and actively growing by connecting your garden hose to the weed killer sprayer, sliding the switch to "ON" and spraying evenly until the lawn is wet
- WHERE TO USE: This spray weed killer for lawns won't harm lawn grasses when used as directed - use on lawn grasses including Bermudagrass, Buffalograss, Fescues, Kentucky Bluegrass, Ryegrass and Zoysiagrass
The Smart Shopper’s Guide to Lawn Fertilizer That Kills Weeds
Want a lush, green lawn without those pesky invaders? Choosing the right “weed and feed” product is key. This guide helps you pick the best fertilizer that also tackles unwanted weeds effectively.
1. Key Features to Look For
When you shop, look closely at the product label. These features tell you how well the product works.
- Weed Killing Power (Active Ingredients): Check the chemical names. Common weed killers include 2,4-D, Dicamba, or MCPP. These ingredients actually destroy the weeds.
- Fertilizer Ratio (The N-P-K Numbers): These three numbers (like 20-5-10) show the percentage of Nitrogen (N), Phosphorus (P), and Potassium (K). Nitrogen makes grass green and grow. Choose a ratio that matches your lawn’s needs.
- Weed Type Targeting: Does the label say it kills broadleaf weeds (like dandelions) or grassy weeds (like crabgrass)? Make sure it targets the weeds you see most often.
- Application Timing: Some formulas work best in spring, while others are designed for fall application. Check the season recommendation.
2. Important Materials and Ingredients
The best products balance feeding your grass and fighting weeds.
Fertilizer Components
- Nitrogen Source: Quick-release nitrogen works fast but fades sooner. Slow-release nitrogen feeds your lawn over several weeks, giving you longer results and reducing the risk of burning the grass.
- Weed Control Type: Most common products use selective herbicides. These kill the weeds but leave your desirable grass unharmed.
Safety and Handling
- Always check the safety warnings. Wear gloves and long pants when applying these chemicals.
3. Factors That Improve or Reduce Quality
Not all weed and feed products perform the same way. Quality depends on several things.
Factors Improving Quality
- Slow-Release Nitrogen: This creates steady growth and less stress on your lawn. It’s a sign of a higher-quality fertilizer.
- Weather Appropriateness: Applying the product when the weather matches the label instructions maximizes effectiveness. Rain helps move the fertilizer into the soil, but too much rain right after application can wash it away.
- Proper Calibration: Using a spreader correctly ensures you apply the right amount.
Factors Reducing Quality
- Applying During Stress: If your lawn is already dry or extremely hot, applying these chemicals can harm the grass, even if the weeds die.
- Using Old Product: Chemicals degrade over time. Always check the expiration date.
- Inconsistent Spreading: Over-applying in one spot burns the grass; under-applying leaves weeds untouched.
4. User Experience and Use Cases
How you use the product greatly affects your success.
Best Use Cases
- Preventative Crabgrass Control: Look for “pre-emergent” weed killers. You apply these early in the spring before the crabgrass seeds actually sprout.
- Active Weed Cleanup: Use “post-emergent” formulas when you see dandelions or clover actively growing.
- Seasonal Tune-Up: Many homeowners use a weed and feed product once in the spring and once in the early fall for comprehensive care.
Users generally enjoy the convenience of feeding and weeding in one step. However, results often depend on watering correctly after application. A slow, steady watering schedule helps the fertilizer work without washing the weed killer away.
10 Frequently Asked Questions (FAQ) About Lawn Fertilizer to Kill Weeds
Q: How long does it take for the weeds to die after I apply the product?
A: Most post-emergent weed killers start working within a few days. You should see visible yellowing or curling of the weeds within one to two weeks.
Q: Can I use this product if I have new grass seed?
A: Usually, no. Most weed and feed products contain herbicides that stop all seed germination, which means your new grass seed will not grow. Wait until your new lawn is established before using these products.
Q: What is the best time of year to apply a weed and feed product?
A: Early spring is often best for pre-emergent weed control. For killing existing broadleaf weeds, apply when temperatures are mild (between 60°F and 80°F) and the weeds are actively growing.
Q: Will this kill my flowers or vegetable garden?
A: Yes, if the spray drifts onto them. These products are “selective,” meaning they target broadleaf plants. Keep the product away from desirable flowers, shrubs, and vegetable patches.
Q: Do I need to water my lawn after spreading the granules?
A: Yes, this is very important. Water lightly after application to help the fertilizer dissolve and move the active ingredients down to the soil level where the roots are.
Q: What should I do if it rains right after I apply it?
A: If the label says to wait 24 hours before rain, and it rains sooner, the product might wash away. You may need to reapply the treatment after the recommended waiting period has passed.
Q: Is there a difference between granular and liquid weed and feed?
A: Granular products are spread with a spreader and rely on watering to activate. Liquid products mix with water and are sprayed on. Liquids often provide faster results but may require more careful application.
Q: Can I mow my lawn immediately after applying the product?
A: No. Wait at least two days after application before mowing. This gives the weed killer enough time to be absorbed by the weed leaves.
Q: What are those N-P-K numbers on the bag?
A: They show the percentage of the main nutrients: Nitrogen (N) for green growth, Phosphorus (P) for root development, and Potassium (K) for overall plant health.
Q: How do I store leftover weed and feed?
A: Store any unused product in its original, tightly sealed bag or container in a cool, dry place away from children and pets. Do not store it where temperatures get too hot.