I totally understand your struggle with keeping weeds at bay—it's a perennial challenge for many of us gardeners. I've had my fair share of battles with them, and I've learned a few things along the way that might help you.
When it comes to commercial options, I've found that products containing glyphosate, like Roundup, are quite effective for broad-spectrum weed control. However, I'd urge caution here since the safety of glyphosate has been much debated, especially in areas where pets and kids play. A safer alternative that I've started using is vinegar-based herbicides. They're less potent but much more pet- and kid-friendly.
On the natural front, I've had success with a homemade mixture of vinegar, salt, and a bit of dish soap. The acetic acid in the vinegar acts as a desiccant to the weeds. That said, you should apply it on a sunny day for the best effect. Just be cautious with where you spray it, as it can damage your desired plants as well. I usually use a targeted spray to make sure it's only hitting the weeds.
In terms of prevention, mulching is one of my top recommendations. A thick layer of organic mulch like wood chips or straw not only suppresses weeds but also enhances soil health as it breaks down. I've noticed significantly fewer weeds in the mulched areas of my garden. You might also look into landscape fabric, which serves as a barrier to weeds while allowing water and nutrients to reach your plants.
Corn gluten meal is another natural product that's gained popularity. It acts as a pre-emergent herbicide, preventing seed germination. Just remember that this won't work on existing weeds and is more of a preventative measure for the next season.
I'd suggest periodic hand weeding as well, which may sound tedious but can be effective, especially after a good rain when the soil is softer. It's also a great way to get a closer look at your plants and identify any issues early on.
If you're looking for a longer-lasting solution, you might want to explore planting ground covers that will out-compete weeds. Clover, for instance, not only suppresses weeds but also fixes nitrogen in the soil, benefiting your veggies and flowers.
Lastly, if you're using any products or methods, especially the commercial herbicides, ensure you read the labels thoroughly for instructions and warnings. This helps you understand any potential impacts on your plants and soil.
I'd love to hear more about your garden setup. What vegetables and flowers are you growing? Knowing this might help tailor some strategies more specifically to your needs.