Healthy, thriving plants that fill the space will discourage weeds from establishing where they’re not wanted. Lay out a variety of large and small plants with taller shrubs in the back and shorter flowers in the front. If you still have bare soil, plant groundcovers such as creeping thyme, ajuga, sedum, pachysandra, or clover. In the garden, use the same technique to fill the space by intercropping above-ground plants next to underground vegetables. “One of the most effective weed blockers is plants themselves,” explains Anna. “Native plants are especially good at this because they evolved to compete, spread, and fill space. Native groundcovers like wild strawberry, golden ragwort, pussytoes, creeping phlox, and sedges create a living carpet that shades the soil and leaves little room for weed seeds to germinate. In sunny areas, dense mid-height natives such as wild bergamot, black-eyed Susan, and native grasses help block light at the soil surface. Planting a bit closer together than traditional spacing recommendations helps close gaps faster and reduces weed pressure early on. Once native plants are established, they do most of the weed suppression for you.”
Mulching 101
Mulching works by blocking sunlight, stunting the opportunity for weeds to thrive. Many materials, including bark, newspaper, cardboard, straw, compost, or leaves, can be used. However, to be effective, it needs to be applied in a thick layer. As an added benefit for the plants you do want to grow, mulching helps retain moisture, making water practices more effective. It also helps to regulate soil temperature, protecting roots from cold snaps and extreme heat. Anna explains, “Use organic materials that feed the soil while they suppress weeds. Shredded fall leaves are one of the best options, and they are free. Wood chips and pine needles also work well. Aim for a two to four- inch layer and keep mulch pulled slightly away from plant stems. Over time, this improves soil structure and makes it harder for weeds to get established.”
Chemical and Organic Weed Control
Peruse your neighborhood home improvement store or garden center, and you’ll find a plethora of options for treating weeds. Perhaps the least talked about are the pre-emergent weed control products. These products are specially formulated to prevent weed problems before they occur. However, to target your specific weed problem, you’ll need to be familiar with those in your yard. These products are primarily chemical herbicides, so familiarize yourself with the dangers to pets, pollinators, family, edible plants, and the soil. If you want to skip the chemicals, try organic options instead. Anna told us, “For people who want an organic weed spray option, think of it as a spot treatment rather than a solution for garden beds. A simple mix of stronger vinegar with a few drops of dish soap works as a contact spray and is best used on hot, sunny days for weeds in cracks, gravel, or along edges. It kills the foliage but
September 2024 21 May 2026
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