Sometimes the most efficient way to tackle weeds is by combining lawn feeding and weed control into one product. Fertilizer + weed killer products—often called “weed-and-feed”—provide nutrients for grass while simultaneously killing common broadleaf weeds. This combined approach can simplify lawn care and save time.

These products typically contain herbicides such as 2,4-D, dicamba, or quinclorac, combined with a balanced fertilizer formula to feed your lawn. They work best when weeds are actively growing, and when applied correctly at the right rates. Selecting the right weed-and-feed can deliver both a lush lawn and effective weed suppression.

In this guide, we highlight top fertilizer-weed killer products, tips on how to choose them, and common mistakes to avoid. Whether you have established grass or persistent weeds, these options can help you manage both growth and weeds in one go.

10 Best Fertilizer-Weed Killer Products

1. BioAdvanced 5-in-1 Weed & Feed

This is a classic granular weed-and-feed that feeds your lawn and controls over 200 types of weeds. It has a high nitrogen ratio (22-0-4) to encourage green, dense grass. Plus, it includes pre-emergent and post-emergent herbicides for long-lasting weed control.

The 5-in-1 formula means you don’t need separate products: it feeds, kills weeds, prevents crabgrass, and strengthens your turf. It’s designed for use on established lawns, and gives results for up to three months when applied correctly.

Great for large lawns, this weed-and-feed helps maintain a healthy lawn while fighting broadleaf weeds. The slow-release nitrogen means fewer applications. Just be sure to water in after spreading so the herbicide activates properly.

2. Weed & Feed Granules (2-in-1)

This 2-in-1 granular formula combines fertilizer with a broadleaf herbicide to simplify lawn care. The herbicide works to remove weeds like dandelion, clover, and other common broadleaf species. Meanwhile, the fertilizer feeds your lawn, helping it grow thick and strong.

Apply it using a spreader for even coverage and then water to activate both the feeding and weed-killing action. Its dual action makes it useful for homeowners who prefer a single-step lawn treatment. This helps reduce the number of separate products needed in your lawn-care routine.

The dual-function product is especially handy during the growing season when weeds are active. Because it’s a granular formula, it’s good for lawns and gives you consistent weed suppression. Use it in spring or early summer for best effect.

3. Hi-Yield Weed & Feed 15-0-10

Hi-Yield’s Weed & Feed granules combine a 15-0-10 fertilizer with a broadleaf herbicide to address weeds like dandelions, chickweed, and plantain.

This formula delivers moderate nitrogen for grass growth but no phosphorus, which reduces risk of over-fertilizing. The herbicide component targets common broadleaf weeds without damaging most lawn grasses. Apply evenly around your lawn so both weed control and feeding are uniform.

A single application helps your lawn gain strength while reducing weed competition. It’s best used when weeds are actively growing, and the fertilizer helps the grass recover as weeds die off. It’s cost-effective and efficient for many homeowners.

4. Lawn Fertilizer & Weed Control Bundle

This bundle includes a fertilizer plus weed-killing herbicide, giving you both nutrition and weed control in one package. It’s designed for lawns that need both feeding and weed suppression, especially in spring.

The herbicide in this bundle helps control tough broadleaf weeds while the fertilizer promotes healthy turf growth. The combination makes it ideal for regular lawn maintenance, reducing the need to apply separate products. With proper application, it offers long-term benefits.

Gardeners who want a simpler lawn care routine appreciate this bundle. It gives balanced fertilizer and weed control, especially for broadleaf weeds. Use a spreader and water in after applying for best results.

5. Selective Lawn Weed Killer with Fertilizer

Selective weed killers combine herbicides targeting broadleaf weeds with lawn-safe fertilizer so your grass isn’t harmed. These formulas help eliminate weeds while allowing your lawn to take up the fertilizer you apply.

The selective formula supports a healthy lawn while reducing weed competition. It’s especially useful for lawns that already struggle with persistent broadleaf weeds.

Apply when weeds are actively growing, and be sure to spread evenly. Water lightly after application to help the fertilizer and herbicide work. This solution is great when you want to protect your lawn and kill weeds at the same time.

6. Insect-&-Feed (Phase 3)

This product includes broadleaf weed control along with fertilizer and pest control support. Its granular formula makes it easy to apply across your lawn.

It strengthens turf, reduces weed pressure, and helps control insect issues. The nitrogen in the fertilizer helps your lawn compete better after weeds are weakened.

Because it’s both a feed and control formula, you save time applying fewer products. Make sure to follow label instructions closely to avoid overapplication. Use a spreader and water in post-application.

7. Weed-N-Feed Fertilizer with Surge Herbicide

This weed-and-feed product has an NPK of 16-0-9 and includes a herbicide designed specifically for broadleaf weeds.

The herbicide is highly effective on weeds like dandelions, clover, and other broadleaf species, while the fertilizer promotes grass growth. Apply per instructions and water in to activate both weed control and nutrient delivery.

It’s ideal for homeowners wanting a strong lawn and fewer weeds in one treatment. Apply during active weed growth for best herbicide efficacy. It’s a popular choice for season-long lawn maintenance.

8. Weed & Feed Granules

This is another dual-action granular product designed for lawn care. It helps feed your lawn while killing common broadleaf weeds.

The fertilizer portion helps your grass grow thick and healthy, which in turn crowds out future weed growth. Meanwhile, the herbicide part works on weeds already present. Application is straightforward with a standard spreader.

Works particularly well in spring or early summer when weeds are active. Water in after applying to ensure activation. Use proper spreader settings to get coverage right.

9. Shake-and-Spread Weed & Feed Combo

These shake-and-spread granular products combine fertilizer with a weed control herbicide for convenience. They are ideal for large lawns and reduce the need to spray separate weed killers.

The combined formula helps strengthen grass and kill weeds simultaneously, making maintenance easier. Follow spreader settings on the bag and water after application to activate both functions. Keep people and pets off until fully dry.

Easy to apply, these combos are efficient for regular lawn care. They provide a balanced feed plus targeted weed control. Good for homeowners who want simple, all-in-one lawn treatment.

10. Custom Herbicide + Fertilizer Tank Mix

Some gardeners prefer making their own mix: using a turf fertilizer plus a separate selective herbicide. This custom approach lets you adjust the NPK and herbicide strength to exactly match your lawn’s needs.

Mixing your own feed + weed control lets you tailor applications based on weed pressure, season, and grass type. Apply with a sprayer for the herbicide part and spread fertilizer separately if needed. This method can be very cost-effective and flexible.

Be cautious: always follow herbicide label directions and avoid over application. Use proper protective equipment when mixing and applying. Test a small area first and observe for plant response.

Buyer’s Guide: 7 Tips for Choosing the Right Fertilizer-Weed Killer

• Select the right herbicide type: Choose selective weed-and-feed if you want to kill only broadleaf weeds, not your grass.
• Look at the NPK ratio: A balanced fertilizer helps your lawn recover after herbicide kills weeds.
• Timing matters: Apply when weeds are actively growing for best herbicide uptake.
• Use the correct spreader settings: Too much product can damage your lawn or be wasted.
• Water in the product: After spreading, lightly water to activate both fertilizer and weed control.
• Limit application frequency: Most weed-and-feed products should not be applied more than twice per year.
• Be safe: Wear protective gear when applying, and keep pets/kids off treated lawn until it dries.

Frequently Asked Questions

1. Can I use weed-and-feed on newly seeded lawns?

No, it’s not recommended because the herbicide may damage new seedlings. Wait until your grass is well established before applying weed-and-feed. Always check the product label.

2. Will weed-and-feed kill all types of weeds?

It works best on common broadleaf weeds, but may not control tough or deep-rooted weeds fully. Persistent weeds may need spot-treatment with a separate herbicide.

3. Is it safe for pets after application?

Wait for the product to dry completely before letting pets back on the lawn. Always follow label reentry instructions. Store any leftover product securely.

4. Can I use weed-and-feed if I already used a fertilizer?

Yes, but avoid overfeeding: applying too much nitrogen can stress the grass. Space applications according to label guidelines and your soil’s nutrient needs.

5. Should I mow before applying weed-and-feed?

Yes — mowing 1–2 days before application helps weeds absorb the herbicide through more exposed leaves. It also ensures even coverage.

6. What happens if it rains immediately after application?

Rain can wash off the product before it activates, reducing effectiveness. Try to apply when no rain is expected for at least 24 hours.

7. Can I overseed after weed-and-feed?

Not immediately — herbicides may damage new seed. Wait at least 4–6 weeks or follow the product’s re-seeding guidelines.

Conclusion

Fertilizer-weed killer combos (‘weed-and-feed’) can be a powerful, time-saving tool for lawn care. They feed your grass while simultaneously controlling common broadleaf weeds, simplifying your maintenance routine. Choosing the right blend ensures your lawn remains healthy even as weeds are suppressed.

When applying these products, follow label directions, time the application when weeds are growing, and water it in properly. With the right product and technique, you can achieve a lush, green lawn without the eyesore of unsightly weeds.