Weed and feed products are a popular choice for lawn care, as they offer a convenient solution for fertilizing and controlling weeds in a single application. However, understanding when to use these products is crucial to achieve the desired results and maintain a healthy lawn. The timing of weed and feed application depends on various factors, including the type of grass, climate, and the growth stage of the lawn.
Understanding Weed and Feed Products

Weed and feed products typically contain a combination of fertilizers and herbicides. The fertilizers provide essential nutrients for the grass, such as nitrogen, phosphorus, and potassium, which promote healthy growth and development. The herbicides, on the other hand, target specific types of weeds, such as broadleaf weeds or crabgrass, and help control their growth. The formulation of these products can vary, with some containing pre-emergent herbicides that prevent weeds from germinating, while others contain post-emergent herbicides that kill existing weeds.
Types of Weed and Feed Products
There are several types of weed and feed products available, each designed for specific lawn types and needs. For example, products containing dicamba or mecoprop are effective against broadleaf weeds, while those containing prodiamine or dithiopyr are better suited for controlling crabgrass. It’s essential to choose a product that matches the specific needs of your lawn, taking into account factors such as grass type, climate, and the types of weeds present.
Product Type | Active Ingredients | Target Weeds |
---|---|---|
Broadleaf Weed and Feed | Dicamba, Mecoprop | Broadleaf Weeds (dandelions, clover, etc.) |
Crabgrass Preventer and Feed | Prodiamine, Dithiopyr | Crabgrass, Other Annual Grasses |
General Purpose Weed and Feed | 2,4-D, MCPP, Dicamba | Broadleaf Weeds, Crabgrass, Other Weeds |

Key Points
- Choose a weed and feed product that matches your lawn type and needs.
- Apply weed and feed products during the growing season, when weeds are actively growing.
- Follow the product label instructions for application rates and timing.
- Consider the potential risks and limitations of using weed and feed products, including environmental impact and potential harm to desirable plants.
- Monitor your lawn regularly and adjust your weed and feed application schedule as needed.
Timing of Weed and Feed Application

The timing of weed and feed application is critical to achieve effective weed control and fertilization. In general, it’s best to apply weed and feed products during the growing season, when weeds are actively growing. For cool-season grasses, such as Kentucky bluegrass, perennial ryegrass, and tall fescue, the best time to apply weed and feed is in the fall, around late August or early September. This allows the fertilizer to promote healthy growth and prepare the lawn for the upcoming winter, while the herbicide controls any remaining weeds.
Cool-Season Grasses
For cool-season grasses, a second application of weed and feed can be made in the spring, around late March or early April. This helps control any weeds that may have germinated during the winter months and provides a boost of fertilizer to promote healthy growth. However, it’s essential to avoid applying weed and feed products during the hottest part of the summer, as this can stress the grass and lead to disease or pest problems.
On the other hand, warm-season grasses, such as Bermudagrass, zoysiagrass, and buffalograss, have different growth patterns and require adjusted application timing. For these grasses, the best time to apply weed and feed is in the late spring to early summer, around late May or early June. This allows the fertilizer to promote healthy growth during the warmest part of the year, while the herbicide controls any weeds that may be present.
Risks and Limitations of Weed and Feed Products
While weed and feed products can be effective for controlling weeds and fertilizing lawns, they also have potential risks and limitations. For example, these products can harm desirable plants, such as flowers, trees, and shrubs, if not applied carefully. Additionally, the herbicides in weed and feed products can contaminate soil, water, and air, posing environmental risks. It’s essential to follow the product label instructions and take necessary precautions to minimize these risks.
Environmental Impact
The environmental impact of weed and feed products is a growing concern. The herbicides in these products can persist in the environment, contaminating soil, water, and air. This can have long-term effects on ecosystems, including the decline of beneficial insects, such as bees, and the contamination of waterways. To minimize these risks, it’s essential to choose products with environmentally friendly formulations and follow the product label instructions for application rates and timing.
What is the best time to apply weed and feed products?
+The best time to apply weed and feed products depends on the type of grass and climate. For cool-season grasses, the best time is in the fall, around late August or early September, and again in the spring, around late March or early April. For warm-season grasses, the best time is in the late spring to early summer, around late May or early June.
How often should I apply weed and feed products?
+The frequency of weed and feed application depends on the product label instructions and the specific needs of your lawn. In general, it's best to apply these products during the growing season, when weeds are actively growing, and to follow the recommended application rates and timing.
What are the potential risks and limitations of using weed and feed products?
+Weed and feed products can harm desirable plants, contaminate soil, water, and air, and pose environmental risks. It's essential to follow the product label instructions and take necessary precautions to minimize these risks.
In conclusion, weed and feed products can be a valuable tool for lawn care, but it’s essential to understand when to use them and how to apply them effectively. By choosing the right product for your lawn type and needs, following the product label instructions, and taking necessary precautions, you can achieve a healthy, weed-free lawn while minimizing the potential risks and limitations of these products.