Does your lawn look more like a patchy, weed-infested battlefield than a lush, green paradise? You’re not alone! Many homeowners struggle to keep their yards looking picture-perfect. Choosing the right combination of lawn fertilizer and weed killer can feel like navigating a confusing maze. Should you use a two-in-one product, or tackle feeding and weeding separately? The wrong choice can lead to wasted money, stressed grass, or even more stubborn weeds next season.
Understanding the difference between various formulas and application times is key to achieving that envy-inducing curb appeal. This guide cuts through the confusing labels and complicated instructions. We will break down exactly what ingredients you need, when to apply them for the best results, and how to keep your grass healthy all year long. Get ready to transform your yard from drab to fab!
Top Lawn Fertilizer And Weed Killer Recommendations
- WEED AND FEED FOR LAWNS: Apply this combination weed killer for grass and lawn food to your wet lawn when weeds are actively growing and daytime temperatures are consistently between 60°F and 90°F; don't apply more than 2X per year
- WEED KILLER PLUS LAWN FOOD: Scotts Turf Builder Weed & Feed5 weed killer plus fertilizer for grass is a clover and dandelion killer for lawns that also feeds to thicken your lawn and crowd out future weeds
- DO NOT USE ON: Do not use this grass fertilizer for lawns plus yard weed killer on St. Augustinegrass (including Floratam), Dichondra, Lippia, Carpetgrass, and Bentgrass lawns
- USE ON LISTED GRASS TYPES: Apply this lawn care product to Bahiagrass, Bermudagrass, Bluegrass, Centipedegrass, Fescue, Ryegrass, and Zoysiagrass
- WEED CONTROL FOR LAWNS: These Scotts weed killer plus lawn fertilizer granules control over 50 listed lawn weeds, including clover, dandelion, plantain, morningglory, chicory, eveningprimrose, and purslane
- QUICK NITROGEN BOOST: Scotts Liquid Turf Builder with Plus 2 Weed Control is a weed killer and grass fertilizer for lawns that gives a quick boost of nitrogen while controlling weeds
- EASY-TO-USE: To apply the lawn food and weed killer spray, simply attach this hose-end applicator to your garden and spray lawn; apply when weeds are actively growing for best results
- BROADLEAF WEED KILLER: This weed killer for lawns with grass fertilizer targets buckhorn, chickweed, ground ivy, henbit, knotweed, lambsquarters, oxalis, pigweed, plantain, poison ivy, ragweed, and spurge
- KILLS LISTED WEEDS: This lawn weed killer plus fertilizer kills dandelions, clover, and other listed lawn weeds
- COVERAGE: Scotts Liquid Turf Builder with Plus 2 Weed Control 32 fl. oz. Ready-To-Spray covers up to 6,000 sq. ft. for warm season lawns and 4,000 sq. ft. for cool season lawns
- 3-IN-1 FORMULA: Scotts Turf Builder Triple Action1 is a three-in-one lawn fertilizer and weed control formula that kills listed lawn weeds, prevents crabgrass, and feeds grass to build thick, green lawns
- WHERE TO USE: This grass fertilizer, crabgrass preventer, and clover and dandelion killer for lawns is for use on Bahiagrass, Centipedegrass, Kentucky Bluegrass, Perennial Ryegrass, Bermudagrass, Tall Fescue, Fine Fescue, and Zoysiagrass
- LAWN WEED CONTROL: This lawn care product is a weed killer for lawns that controls dandelion, clover, dollarweed, ground ivy, chickweed, plantain, henbit, English daisy, and other listed lawn weeds
- CRABGRASS PREVENTER: This pre-emergent weed killer also prevents crabgrass for 4 months (will not kill existing crabgrass); stops other listed grassy weeds from invading your lawn
- HOW TO USE: Apply to a wet lawn with a Scotts spreader, then water in after 24 hours; apply in early spring when dandelions are actively growing
- 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
- 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
- 3-IN-1 FORMULA: Scotts Turf Builder Triple Action1 is a three-in-one lawn fertilizer and weed control formula that kills listed lawn weeds, prevents crabgrass, and feeds grass to build thick, green lawns
- WHERE TO USE: This grass fertilizer, crabgrass preventer, and clover and dandelion killer for lawns is for use on Bahiagrass, Centipedegrass, Kentucky Bluegrass, Perennial Ryegrass, Bermudagrass, Tall Fescue, Fine Fescue, and Zoysiagrass
- LAWN WEED CONTROL: This lawn care product is a weed killer for lawns that controls dandelion, clover, dollarweed, ground ivy, chickweed, plantain, henbit, English daisy, and other listed lawn weeds
- CRABGRASS PREVENTER: This pre-emergent weed killer also prevents crabgrass for 4 months (will not kill existing crabgrass); stops other listed grassy weeds from invading your lawn
- HOW TO USE: Apply to a wet lawn with a Scotts spreader, then water in after 24 hours; apply in early spring when dandelions are actively growing
- DUAL-ACTION FORMULA: Spectracide Weed & Feed 20-0-0 kills weeds while feeding your lawn.
- KILLS MAJOR BROADLEAF WEEDS: Kills dandelion, chickweed, knotweed, plantain, clover, mallow, purslane and many other broadleaf weeds.
- FEEDS LAWN: Formulated with 20% nitrogen to feed your lawn.
- COVERAGE: One 32-oz bottle treats up to 7,500 square feet.
- CONVENIENT THREE PACK: Three pack features one nozzle and three bottles of product.
- 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
Your Guide to Greener Grass: Buying Lawn Fertilizer and Weed Killer
Want a lawn that looks like a green carpet? You need the right combination of fertilizer and weed killer. This guide helps you choose the best product for your yard. We focus on what matters most for healthy, weed-free grass.
Key Features to Look For
When shopping, check the product label closely. Good features make a big difference in how well the product works.
1. N-P-K Ratio (The Numbers Game)
Fertilizers have three main numbers on the bag, like 20-5-10. These numbers show the percentage of Nitrogen (N), Phosphorus (P), and Potassium (K).
- Nitrogen (N): Makes the grass green and helps it grow fast. This is the most important number for most lawns.
- Phosphorus (P): Helps with strong root growth, especially in new grass.
- Potassium (K): Keeps the grass strong and helps it fight off stress, like heat or cold.
2. Weed Control Type
Decide if you need a product that kills existing weeds or one that stops new weeds from sprouting.
- Selective Weed Killers: These attack specific weeds (like dandelions) but leave your good grass alone.
- Pre-Emergent Weed Killers: These create a barrier in the soil. They stop weed seeds from growing in the first place. Use these early in the spring.
3. Application Method
Most products are granular (like tiny pebbles) or liquid.
- Granular: Easy to spread evenly with a spreader.
- Liquid: Mixes with water and sprays on. It often works faster.
Important Materials Inside
The ingredients determine how effective your product is. Look for quality components.
Fertilizer Components
Good fertilizers release nutrients slowly. This means less work for you and steady feeding for your lawn.
- Slow-Release Nitrogen: These materials feed your lawn over many weeks. Look for terms like “coated urea” or “polymer-coated.”
- Natural Options: Some people prefer organic fertilizers made from things like bone meal or manure. These feed the soil microbes as well.
Weed Killer Chemicals
Weed killers use active ingredients to do their job. Always check the label to ensure the chemicals target the weeds you have.
- Common Killers: Look for chemicals like 2,4-D or Dicamba for broadleaf weeds.
- Safety First: Read the warnings. Some chemicals require you to keep pets and children off the lawn for a set time after application.
Factors That Improve or Reduce Quality
The quality of the product affects your results. You often get what you pay for.
What Improves Quality?
- Season-Specific Formulas: Products designed for spring feeding work differently than those for fall feeding. Using the right one improves results.
- Trace Minerals: Sometimes, lawns need small amounts of iron or magnesium for deep color. High-quality blends include these.
What Reduces Quality?
- Poor Spreading: If you don’t spread granular fertilizer evenly, you get stripes of dark green grass next to pale, starved grass.
- Applying in Bad Weather: Applying weed killer when rain is expected washes the product away. Applying fertilizer when it is very hot can actually burn your grass.
User Experience and Use Cases
How you use the product matters as much as what you buy.
Ease of Use
Simple instructions mean fewer mistakes. Products that come ready-to-mix (for liquid sprays) or are clearly marked for spreader settings are easier for beginners.
When to Apply (Use Cases)
- Early Spring: This is the best time for pre-emergent weed control to stop crabgrass. A balanced fertilizer helps grass recover from winter.
- Late Spring/Early Summer: Focus on deep green color and strengthening the grass before the summer heat arrives.
- Fall: This is crucial for root building. A fertilizer higher in Potassium helps roots prepare for winter dormancy.
Using the correct product at the right time ensures you get a thick, healthy lawn without fighting constant battles against weeds.
10 Frequently Asked Questions (FAQ)
Q: How often should I fertilize my lawn?
A: Most lawns benefit from three to four applications per year: early spring, late spring, summer (lightly), and fall.
Q: Can I use weed killer if I just seeded my lawn?
A: No, not usually. Wait until the new grass has been mowed at least two or three times. Weed killers can damage tender new seedlings.
Q: What does “weed and feed” mean?
A: “Weed and feed” is a combination product. It puts down fertilizer and weed killer at the same time. It saves you a step.
Q: Will fertilizer burn my grass?
A: Yes, if you use too much or if you apply it right before a heavy rain or intense heat. Always follow the bag’s recommended application rate.
Q: When is the best time to apply pre-emergent weed killer?
A: Apply it in early spring, usually when the forsythia bushes start to bloom. This timing stops seeds from sprouting.
Q: Do I need to water after applying granular fertilizer?
A: Yes. Watering helps move the fertilizer down to the soil and roots. It also helps dissolve the granules so they do not sit on the blades and cause burning.
Q: What should I do if I see dandelions right now?
A: Use a selective, post-emergent weed killer spray designed to kill broadleaf weeds like dandelions immediately.
Q: Is organic fertilizer better than synthetic?
A: Organic feeds the soil over a long time and is gentler. Synthetic feeds the grass quickly, giving faster green-up. Both work well if used correctly.
Q: How do I choose the right spreader setting?
A: Every product brand lists the suggested setting number for common spreader types (like drop or broadcast) right on the bag.
Q: Is it safe to use fertilizer and weed killer on a vegetable garden?
A: Never use lawn weed and feed products near edible plants. Many lawn chemicals can harm vegetables or make them unsafe to eat.