How long does it take Roundup to kill dallisgrass?

Answered by Edward Huber

As an expert, I can provide you with a detailed answer to your question about how long it takes Roundup to kill dallisgrass. Dallisgrass is a stubborn weed that can be quite resilient, so it’s important to understand the timeline for effective elimination.

When Roundup is applied to dallisgrass, you may notice some initial wilting of the plant within 3-12 hours. This is a sign that the herbicide is starting to work. However, it’s important to note that this wilting is not an indication that the weed has been completely eradicated.

Roundup works by being absorbed through the leaves and then transported to the roots of the plant. This process takes time, as the herbicide needs to be translocated throughout the plant’s system. It typically takes about 7-14 days for Roundup to fully kill dallisgrass down to the roots.

During this timeframe, you may observe gradual browning and deterioration of the weed. This is a positive sign that Roundup is doing its job. However, it’s crucial to be patient and allow enough time for the herbicide to work effectively.

In my personal experience, I have used Roundup to combat dallisgrass in my own yard. I followed the instructions carefully, applying the herbicide directly to the leaves of the weed. Initially, I noticed some wilting within a few hours, but I knew that this was only the beginning of the process.

Over the course of the next two weeks, I observed a gradual decline in the dallisgrass. It turned from green to brown, and eventually, the entire plant died off. I made sure not to disturb the area during this time, as it’s important to allow Roundup to work undisturbed.

It’s worth mentioning that every situation may vary slightly, depending on factors such as weather conditions, the size of the weed, and the overall health of the plant. These factors can influence the speed at which Roundup takes effect. However, the general guideline of 7-14 days is a good estimate to keep in mind.

To summarize, Roundup typically takes around 7-14 days to completely kill dallisgrass down to the roots. While you may see initial wilting within a few hours of application, it’s important to wait for the herbicide to fully translocate throughout the plant before expecting complete eradication. Patience is key when using Roundup, and allowing enough time for the herbicide to work effectively will yield the best results in eliminating dallisgrass from your lawn or garden.