Franklin Dean
Weed and feed products are used to apply both fertilizer and herbicide to your lawn. The best time to use them is in the spring when daytime temperatures are between 60 and 90 degrees Fahrenheit. You should mow your lawn two to four days before applying the product, and you should not water your lawn for 24 hours after application. It is important to note that you should not apply weed and feed more than twice a year.
| Characteristics | Values |
|---|---|
| Best time to apply | Spring, when weeds are actively growing and daytime temperatures are between 60°F and 90°F |
| Lawn type | Most popular lawn grasses, including bluegrass, ryegrass, zoysia, Bermuda, bahia, centipede, and fescue |
| Application frequency | Once a year, though some recommend multiple applications |
| Application method | Using a spreader, on a day when the grass is damp with dew but no rain is in the forecast for at least 48 hours |
| Product type | Pre-emergent or post-emergent |
| Product form | Liquid or solid |
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What You'll Learn
- Use a pre-emergent herbicide to prevent weed seeds from sprouting
- Apply post-emergent herbicides to kill weeds after they've sprouted
- Avoid using weed and feed on warm-season lawns in fall to prevent winterkill
- Mow your lawn 2-4 days before using weed and feed for best results
- Water your lawn the day before applying weed and feed
Use a pre-emergent herbicide to prevent weed seeds from sprouting
Using a pre-emergent herbicide is an excellent way to prevent weed seeds from sprouting and keep your lawn healthy. Here are some detailed instructions to ensure effective weed control:
Timing is Critical
Apply pre-emergent herbicides before weed seeds germinate. The best time depends on your region and the weeds you're targeting. As a general rule, for spring weeds like crabgrass, apply pre-emergent in early to mid-spring when the soil temperature consistently reaches about 53-55°F for a few days. In southern regions, you can apply as early as January 1st, while northern areas should wait until after May 25th when soil temperatures reach 55°F. For winter annuals, apply pre-emergent herbicides in the fall when the seeds germinate. Summer annuals germinate in spring, so that's the best time to apply the herbicide.
Choose the Right Product
Select a pre-emergent herbicide designed for your specific weed and grass types. Some products are better suited for cool-season grasses, while others are meant for warm-season grasses. Read the product labels carefully and follow the manufacturer's instructions for application rates and methods.
Apply Evenly
Ensure that you apply the herbicide uniformly across your lawn. Use a broadcast spreader or sprayer to achieve even coverage. Uneven application can leave areas vulnerable to weed germination.
Water After Application
Watering after applying the pre-emergent herbicide is crucial. It helps the product settle into the soil and activates the herbicide, creating a protective barrier against weed growth. Avoid applying the herbicide when the lawn is wet from rain or dew, as this can cause the chemical to clump or wash away, leading to decreased effectiveness.
Avoid Disrupting the Soil
Do not rake, aerate, or dethatch after applying the pre-emergent herbicide. These activities can break the barrier in the soil that the herbicide creates, reducing its effectiveness. If you need to aerate or dethatch, do so before applying the herbicide.
By following these instructions, you can effectively use a pre-emergent herbicide to prevent weed seeds from sprouting and maintain a healthy, weed-free lawn.
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Apply post-emergent herbicides to kill weeds after they've sprouted
Post-emergent herbicides are used to control weeds after they have sprouted and are growing. They are the opposite of pre-emergent herbicides, which are used to prevent weeds from sprouting in the first place. When applying post-emergent herbicides, it is important to follow the manufacturer's instructions and take the necessary safety precautions. Here are some detailed steps to guide you through the process:
Identify the Weeds and Choose the Right Herbicide
Before applying any herbicide, it is crucial to identify the specific weeds you are dealing with. Different herbicides are formulated to target certain types of weeds, so knowing the weeds in your yard will help you select the most effective product. Additionally, consider the type of grass you have, as some herbicides may be labelled for specific grass types.
Gather Equipment and Protective Gear
Ensure you have the necessary equipment for application, such as a backpack sprayer, boom sprayer, hand-held sprayer, or hose-end sprayer. You will also need protective gear, including gloves, long-sleeved clothing, eye protection, a mask, and marker flags.
Prepare the Lawn
Clear your lawn of any debris, such as leaves, sticks, or branches, to allow easy access for the herbicide to reach the soil. Mark the perimeter of the treatment area with flags and divide it into rows to make the application process easier. Mow the lawn as usual, according to your grass type, to ensure better contact between the herbicide and the weeds.
Mix and Apply the Herbicide
Follow the instructions on the label to mix the correct amount of herbicide with water. Aim the sprayer directly at the weeds, ensuring that the leaves are saturated, but avoid excessive runoff. Work systematically through the marked areas, and slightly overlap your passes to prevent missing any spots. Be cautious near delicate plants, garden features, and sprinkler heads to avoid accidental damage.
Post-Application Care
After application, wait a few days before mowing your lawn again to allow the herbicide to be fully absorbed by the weeds. Avoid watering your lawn for at least 24 hours, and do not apply the herbicide if rain is expected within the next 24 hours. Additionally, maintain the pH balance of your soil to prevent weeds from sprouting again and to enhance the effectiveness of future herbicide applications.
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Avoid using weed and feed on warm-season lawns in fall to prevent winterkill
Weed and feed products are designed to apply both fertiliser and herbicide to your lawn. They are useful for controlling weeds after they have sprouted and are growing. However, it is important to be cautious when applying weed and feed to your lawn, especially if you have a warm-season lawn.
Warm-season grasses, such as Bermudagrass, Bahiagrass, Centipede grass, and Zoysia grass, thrive in southern regions and peak in growth during the warm summer months. If you have a warm-season lawn, it is crucial to avoid applying weed and feed in the fall, as it can dramatically increase the chance of winterkill. Instead, focus on preparing your lawn for the winter by encouraging root growth and applying a pre-emergent herbicide to prevent the growth of winter weeds.
When dealing with warm-season lawns, such as Centipedegrass or Bahiagrass, it is recommended to avoid feeding them in the fall. Feeding these lawns late in the season can increase the likelihood of winterkill. Therefore, it is advisable to time the last feeding of the season carefully. Aim to feed warm-season grasses their last meal of the season six to eight weeks before the average fall frost date in your region. Bermuda grass, for instance, can be fertilised up to four to five weeks before frost, but avoid feeding any later.
To summarise, if you have a warm-season lawn, it is best to avoid using weed and feed in the fall to prevent winterkill. Instead, focus on applying fertiliser earlier in the season and utilise pre-emergent herbicides to control weed growth. By timing your last feeding of the season correctly, you can help your lawn prepare for the winter and avoid potential damage.
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Mow your lawn 2-4 days before using weed and feed for best results
Mowing your lawn 2-4 days before using weed and feed is essential for the best results. This timing ensures that the weeds are actively growing and gives them time to grow new leaves after mowing. If you mow too early, the herbicide in the weed and feed may not be as effective, as it needs leaves to cling to. If you mow too late, you may need to mow again before applying the product, as it is recommended to apply weed and feed when your grass is at its normal recommended height.
Weed and feed is a lawn care product that combines herbicide and fertilizer. The herbicide kills weeds, while the fertilizer feeds and thickens your lawn, crowding out future weeds. It is a convenient alternative to applying herbicide and fertilizer separately. However, some turf experts are reluctant to endorse it because it can be challenging to apply both ingredients at the right time and in the correct amounts.
Weed and feed is typically applied in the spring when weeds start popping up and the daytime temperature is consistently between 50 and 90 degrees Fahrenheit. It can also be used in early fall, but you should never feed a warm-season turf, such as centipedegrass or bahiagrass, during this season, as it increases the chance of winterkill. Apply the product to a damp lawn, either in the early morning or early evening, to avoid the midday heat. Avoid watering or mowing for at least 24 hours after application, as this will give the herbicide time to work.
Before using weed and feed, always read the label directions and follow the manufacturer's guidelines for the recommended application rate. Over-applying fertilizer can scorch or "burn" your grass due to the salts in the product. Additionally, wear protective clothing, such as long pants, long sleeves, closed-toed shoes, and gloves, to avoid skin irritation from herbicides.
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Water your lawn the day before applying weed and feed
Watering your lawn before applying weed and feed is essential. The product needs to stick to the foliage of the weeds, and water helps it do that. If the weed killer is foliage-absorbed, you must water the lawn before application. Watering after application will wash off the chemicals from the foliage, rendering them ineffective.
However, if the weed killer is soil-absorbed, you should water the lawn after application. This helps the chemicals penetrate the ground and become effective.
In both cases, water is necessary to activate the chemicals. Therefore, if you forget to water the lawn before application, you can mist the lawn after to activate the chemicals.
To summarise, it is best to water your lawn the day before applying weed and feed. This will ensure the product sticks to the foliage of the weeds. However, do not water the lawn after application unless the weed killer is soil-absorbed.
It is also important to note that you should not apply weed and feed during a hot, dry spell. The lawn needs to be able to go without water for at least 24 hours after application.
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Frequently asked questions
The best time to use weed and feed is in the spring when daytime temperatures are between 60 and 90 degrees.
You should not use weed and feed more than twice a year.
You can apply weed and feed using a spreader or sprayer. If you are using a spray, attach the container to your garden hose, turn it on, and then walk back and forth across your lawn.
Weed and feed products are formulated to apply both fertilizer and herbicide to your lawn. This means you can kill weeds and fertilize your grass at the same time.
Yes, it is important to follow the manufacturer's instructions when using weed and feed. You should also be careful not to let the product touch any desirable garden plants, as it will kill them. Additionally, do not apply weed and feed during a hot, dry spell, and do not water your lawn for 24 hours after application.
