Around the middle of July, a certain kind of defeat sets in when you discover the garden bed you spent two weekends clearing in May has been completely re-occupied. Weeds have returned. Regardless of whether it’s different weeds, or the same ones, the result is the same: all that kneeling, pulling, and soil-under-the-fingernails work has yielded almost nothing. Most gardeners begin to question if they have been doing this incorrectly all along at this point.
It is most likely that they have been. In a subtle, cumulative way, rather than in a flashy manner. Hand pulling weeds is one of the most time-consuming methods of managing a weed problem, and it does not address the conditions that caused the weeds to appear in the first place, but under the right conditions, it is very effective. Gardeners who have seen enough successful and unsuccessful gardens to have sincere opinions about weeds tend to view them differently. As opposed to being individual issues, they are symptoms of a garden that is providing them with an opening.
The opening is usually made of bare soil. It sounds almost too simple, and it is in some ways that it is—there’s more to it than just putting things close together—but the fundamental reasoning is sound. Bright Lane Gardens owner Anna Ohler claims that “planting closely spaced plants reduces exposed soil and naturally crowds out weeds.” Weeds take advantage of any opportunity they can get. Densely planted beds with two to three inches of organic mulch on top present a hostile environment for weeds. Any ground that isn’t already occupied is colonized by them. After weeding, any material that is applied regularly, such as shredded bark, leaf compost, or straw, will prevent light from reaching the soil’s surface, which is necessary for weed seeds to grow. The math is significantly altered, but the problem is not solved.
In addition, most people don’t realize how important timing is. According to Lucie Bradley of Easy Garden Irrigation, regular weeding, even for fifteen minutes a day, keeps weeds from growing deep enough to be difficult to pull. Weekend cannabis users miss this important dynamic. Pulling a small cannabis takes five seconds at first. Three weeks later, the same weed has developed a root system that is difficult to remove, and if it has flowered in the interim, it has already dispersed seeds. “Repeated weeding prevents them from spreading seeds for more weeds after they flower,” Bradley says. This is a compounding problem that prioritizes frequency over intensity.
When it comes to pulling, soil moisture is crucial. Niki Jabbour, author of The Year-Round Vegetable Gardener and founder of Savvy Gardening, recommends planting after a good rainstorm, when the ground is sufficiently soft to release roots easily. “Wet soil makes pulling weeds much easier since it loosens the roots,” she says. Hard pulling on a weed in dry, compacted soil frequently breaks the stem, leaving the root intact and the plant in an ideal position for regrowth. There is a possibility of doing a lot of weeding and accomplishing very little if the conditions are consistently wrong.
Jabbour uses a long-handled collinear hoe to remove larger infestations instead of her hands. In a single sweep, the tool removes weeds at soil level without requiring the gardener to stoop for each plant. By cutting small weeds this way, you can leave them on the surface of the soil, where they will break down and release nutrients. Anything with flowers or obvious seedheads should be disposed of appropriately when composting flowering weeds.
Chemical-free alternatives are becoming more popular among gardeners who want quicker results without using herbicides. Bradley says boiling water kills weeds almost instantly by rupturing their cell structure when applied directly to driveways, paths, or patio cracks. With a solution of one part salt to three parts water, most tiny weeds that push through gravel or concrete can be killed, and apple cider vinegar performs similarly. It is important to keep in mind their selectivity with all of these. They cannot distinguish between vegetables and weeds, so they should be used only on isolated targets far from anything you want to keep. Saltwater can sterilize soil if used excessively in a garden bed, so it’s important to consider this before using it.
One of the most underutilized techniques is pre-emergent treatment, which targets weed seeds before they sprout. Brian Feldman, senior director of technical operations at TruGreen, recommends timing these applications according to soil temperature rather than the calendar. Summer annuals like foxtail and crabgrass usually germinate when soil temperatures are around 55°F for a few days in a row. Applying a pre-emergent right before that threshold is the best way to capture seeds before they develop into plants that need to be pulled.
Standing back from a well-mulched, densely planted, and routinely tended garden bed, it’s hard to miss the fact that the weed problem has mostly been resolved on its own—not by a single, dramatic intervention, but rather by a series of small, consistent habits piled on top of each other. Underneath the surface, the weeds are still waiting. At all times, they are there. However, they aren’t winning.
Alyssa Bennet is a Senior Editor at Mini Greenhouse Kits and a passionate advocate for urban gardening and small-space growing. Currently pursuing her major in Arts at the University of California, Alyssa brings a distinctly creative eye to the world of city gardening – blending artistic sensibility with a genuine love for green living. She writes regularly at minigreenhousekits.com, and when she’s not crafting her next gardening piece, you’ll find her with a paintbrush in hand, watching sports, or exploring the city with friends.