Keeping a lawn thick, green, and free of weeds requires a combination of proper fertilization and effective weed control. One of the most popular lawn care products used by homeowners is Scotts Weed and Feed, which combines fertilizer with weed killer in a single application. This dual-action product helps nourish grass while eliminating common broadleaf weeds that compete for nutrients and space.
Understanding how and when to apply Scotts Weed and Feed is essential to getting the best results. Applying it at the wrong time or in the wrong way can reduce its effectiveness and may even damage your lawn. In this detailed guide, we will explain the correct timing, application methods, and tips for using Scotts Weed and Feed successfully.
What Is Scotts Weed and Feed?
Scotts Weed and Feed is a granular lawn treatment that performs two functions at the same time:
- Feeds the lawn with nutrients to promote strong, healthy growth.
- Kills broadleaf weeds that commonly invade lawns.
The fertilizer component helps grass grow thicker and greener, while the herbicide targets weeds growing within the turf.
Common Weeds Controlled
Scotts Weed and Feed is designed to eliminate many common lawn weeds, including:
- Dandelions
- Clover
- Chickweed
- Plantain
- Henbit
- Ground ivy
- Knotweed
These weeds are called broadleaf weeds because they have wider leaves compared to grass blades.
By removing these weeds and feeding the lawn simultaneously, Scotts Weed and Feed helps grass fill in bare spots and create a dense turf that naturally resists future weeds.
Benefits of Using Scotts Weed and Feed
Using Scotts Weed and Feed as part of a lawn care routine provides several advantages.
Combines Fertilizer and Weed Control
Instead of applying separate lawn products, Weed and Feed provides two treatments in one application, saving time and effort.
Promotes Thick Grass Growth
The fertilizer component strengthens the lawn, allowing grass to grow thicker and healthier.
Reduces Weed Competition
By killing weeds early, the product prevents them from stealing nutrients, sunlight, and water from grass.
Improves Lawn Appearance
Within a few weeks of application, many lawns become noticeably greener and more uniform.
Supports Long-Term Weed Prevention
A dense lawn helps prevent future weed seeds from establishing themselves.
When to Apply Scotts Weed and Feed
Timing plays a crucial role in how effective Scotts Weed and Feed will be.
Best Season: Late Spring
The ideal time to apply Scotts Weed and Feed is late spring, when weeds are actively growing.
During this period:
- Broadleaf weeds have fully emerged
- Grass is actively growing
- Weather conditions are mild
Applying the product during active weed growth ensures the herbicide component can effectively stick to the weed leaves and eliminate them.
Second Application: Early Fall
In some cases, homeowners apply Scotts Weed and Feed again in early fall.
Fall application benefits include:
- Eliminating late-season weeds
- Helping grass recover from summer stress
- Encouraging thicker turf before winter
However, most lawns only require one or two applications per year depending on weed pressure.
Ideal Weather Conditions for Application
Applying Scotts Weed and Feed under the right weather conditions significantly improves results.
Ideal Temperature
The best temperature range is 60°F to 85°F (16–29°C).
Moderate temperatures allow the herbicide to work effectively without stressing the grass.
Slightly Wet Grass
For the weed killer to stick to weed leaves, the grass should be slightly moist.
This can be achieved by:
- Applying early in the morning when dew is present
- Lightly watering the lawn before application
Calm Weather
Wind can cause uneven distribution of fertilizer granules. Apply the product on a calm day with minimal wind.
Avoid Heavy Rain
Rain shortly after application can wash away the herbicide before it has time to work.
Ideally, no rain should occur for at least 24 hours after applying Scotts Weed and Feed.
How Scotts Weed and Feed Works
Scotts Weed and Feed works through two separate mechanisms.
Fertilizer Component
The fertilizer portion provides nutrients such as nitrogen that help grass grow greener and thicker.
This improves lawn density and helps grass fill in spaces where weeds once grew.
Herbicide Component
The weed killer component sticks to weed leaves and penetrates the plant.
Once absorbed, it disrupts the weed’s internal growth processes, eventually causing it to die.
Most weeds begin showing signs of damage within 1–2 weeks after application.
How to Apply Scotts Weed and Feed
Proper application ensures even coverage and effective weed control.
Prepare the Lawn
Before applying Scotts Weed and Feed, mow the lawn 1–2 days beforehand.
Mowing beforehand helps:
- Expose weeds to the product
- Ensure even distribution of fertilizer
- Improve contact between granules and weed leaves
Avoid mowing immediately after application.
Ensure Grass Is Slightly Damp
For best results, the lawn should be slightly wet from dew or light watering.
Moisture helps the herbicide stick to weed leaves so it can penetrate the plant.
If the grass is dry, lightly water it before applying the product.
Use a Lawn Spreader
Scotts Weed and Feed should be applied using a lawn spreader.
Common spreader types include:
- Broadcast spreader
- Rotary spreader
- Drop spreader
Using a spreader ensures even distribution across the lawn.
Set the Correct Spreader Setting
Each product bag provides recommended spreader settings.
Using the correct setting prevents:
- Over-application
- Uneven coverage
- Fertilizer burn
Always follow the instructions printed on the fertilizer bag.
Apply Evenly Across the Lawn
Walk in straight lines across the lawn while spreading the fertilizer.
A good technique is to:
- Spread half the product in one direction.
- Spread the remaining half in the opposite direction.
This cross-pattern helps ensure uniform coverage.
Wait Before Watering
Do not water the lawn for 24 hours after application.
This waiting period allows the herbicide to remain on weed leaves long enough to work.
After 24 hours, watering the lawn helps activate the fertilizer portion.
How Much Scotts Weed and Feed to Apply
The amount of product required depends on lawn size.
Typical bag coverage includes:
- Small bag: about 4,000 square feet
- Medium bag: about 8,000 square feet
- Large bag: about 12,000–15,000 square feet
Measure your lawn area beforehand to ensure accurate application.
Applying too much fertilizer can damage grass, so always follow label instructions.
When You Will See Results
Results from Scotts Weed and Feed appear gradually.
Typical timeline:
- 3–7 days: grass begins greening
- 7–14 days: weeds begin wilting and dying
- 2–4 weeks: lawn becomes thicker and more uniform
Some tough weeds may require a second treatment later in the season.
Grass Types Compatible With Scotts Weed and Feed
Scotts Weed and Feed is suitable for many common turf grasses.
These include:
- Kentucky bluegrass
- Perennial ryegrass
- Tall fescue
- Fine fescue
- Bermudagrass
- Zoysiagrass
However, it should not be used on certain grasses, such as:
- St. Augustinegrass
- Bentgrass
- Dichondra
Always read the product label to confirm compatibility with your lawn type.
Common Mistakes to Avoid
Even experienced homeowners sometimes make mistakes when applying Weed and Feed.
Applying at the Wrong Time
Applying when weeds are dormant or not actively growing will reduce effectiveness.
Applying to Dry Grass
Dry grass prevents the herbicide from sticking to weed leaves.
Over-Applying Fertilizer
Applying too much fertilizer can lead to fertilizer burn, causing yellow or brown patches.
Applying Before Heavy Rain
Rain shortly after application may wash away the herbicide.
Mowing Too Soon
Mowing immediately after application removes the product before it has time to work.
Lawn Care Tips for Better Results
Using Scotts Weed and Feed as part of a full lawn care routine will produce the best results.
Maintain Proper Mowing Height
Most lawns should be kept between 2.5 and 4 inches tall.
Taller grass shades the soil and prevents weed seeds from germinating.
Water Deeply but Infrequently
Deep watering encourages stronger root systems.
Aerate the Lawn
Soil aeration improves nutrient absorption and root development.
Overseed Thin Areas
Adding grass seed helps fill in bare spots and prevents weeds from returning.
Safety Tips When Applying Scotts Weed and Feed
Lawn fertilizers and herbicides should always be applied carefully.
Protect Nearby Plants
Avoid spreading granules on flower beds, vegetable gardens, or shrubs.
The herbicide component may damage non-grass plants.
Keep Children and Pets Away
Keep pets and children off the lawn until:
- The granules have settled
- The lawn has been watered and dried
Avoid Waterways
Do not apply fertilizer near:
- Storm drains
- Ponds
- Streams
This helps prevent nutrient runoff into water systems.
Scotts Weed and Feed Quick Application Table
| Factor | Recommendation |
|---|---|
| Best Season | Late spring when weeds are actively growing |
| Optional Second Application | Early fall |
| Ideal Temperature | 60°F – 85°F (16–29°C) |
| Lawn Condition | Slightly damp grass (morning dew works best) |
| Rain Forecast | No rain expected for at least 24 hours |
| Application Equipment | Broadcast spreader or drop spreader |
| Mowing Schedule | Mow 1–2 days before applying |
| Watering After Application | Wait 24 hours before watering |
| Time to See Results | 7–14 days for weed control |
| Typical Coverage | 4,000–15,000 sq ft depending on bag size |
Final Thoughts
Scotts Weed and Feed is an effective lawn care product that simplifies weed control and fertilization. By combining these two treatments in one application, it helps homeowners maintain a greener, thicker lawn with fewer weeds.
For the best results:
- Apply in late spring when weeds are actively growing
- Ensure the grass is slightly damp before application
- Use a lawn spreader for even coverage
- Avoid watering or mowing for 24 hours after application
When used correctly and combined with good lawn care practices such as proper mowing and watering, Scotts Weed and Feed can significantly improve the health, density, and appearance of your lawn throughout the growing season.
10 Frequently Asked Questions (FAQs)
1. When is the best time to apply Scotts Weed and Feed?
The best time to apply it is late spring when weeds are actively growing and temperatures range between 60°F and 85°F.
2. Can I apply Scotts Weed and Feed in the fall?
Yes, a second application can be made in early fall to control late-season weeds.
3. Should the lawn be wet or dry before applying?
The lawn should be slightly damp so the herbicide sticks to weed leaves.
4. How long should I wait before watering the lawn?
Wait 24 hours after applying before watering.
5. How long does it take for weeds to die?
Most weeds begin wilting within 7–14 days after application.
6. Can I mow after applying Weed and Feed?
Wait 24–48 hours after application before mowing.
7. Can Scotts Weed and Feed be used on newly seeded lawns?
No. Wait until the lawn has been mowed at least four times before applying.
8. Will Weed and Feed kill crabgrass?
Most Weed and Feed products target broadleaf weeds only. Crabgrass usually requires a separate pre-emergent treatment.
9. Is Scotts Weed and Feed safe for pets?
Pets should stay off the lawn until the product has been watered in and the grass is dry.
10. How often should Weed and Feed be applied?
Most lawns require one or two applications per year.
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