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how to keep weeds from growing in concrete cracks

Keeping your home looking well-groomed means getting rid of these problem plants. Luckily, there are strategies to help you remove weeds between slabs, as well as methods to keep them from growing back.

How to Effectively Remove Weeds Between Slabs

Instead of leaving some of the plant buried between the slabs, the V-notch weeder is able to fit in the crack and pull everything out. You can weed more quickly and successfully remove more weeds whole.

Use a Small Propane Torch

I hope this has helped you conquer your weed problem for good.

How to keep weeds from growing in concrete cracks

Aside from being aesthetically unpleasant, weeds poking through sidewalks pose several threats to your asphalt, and family. If left unattended, the weeds will thrive, grow and can eventually create severe concrete deformations and heaving, which is only mended by tearing out the slab. Larger weeds are also tripping hazards, and will continue to reemerge after countless applications of herbicides. Manually eradicate the weeds before prepping the cracks and applying a quick-drying joint sealant.

Spray the weeds with a 5-percent acetic household vinegar. Concentrate the spray on the weeds, reapplying several times over a two- to three-day period or until the weed tops and roots are dead.

Pack the crack tightly with sand before filling it with a quick-drying joint sealant. Cut the sealant’s tip and insert it directly into the crack. Squeeze the product into the crack and overfill to allow for the shrinkage that occurs after drying.

How to keep weeds from growing in concrete cracks

You can stay on top of weed control by devoting a bit of time to the job each week. Many homeowners like to conclude weekly mowing or garden work with a few minutes spent plucking or killing the weeds sprouting out the pavement cracks around the landscape.

In other words, the weeds and grasses that thrive in pavement cracks do so because they are genetically well adapted to the conditions created by concrete, brick, or asphalt paving. It will take repeated efforts using a variety of methods to control these invasive super plants.

Before Getting Started

Kathleen Connolly has been an advanced master gardener and accredited organic lawn care professional for over 30 years. She specializes in lawn care, horticulture, and landscape design. Kathleen earned a Master's Degree in Landscape Planning and Design and Sustainable Land Use Planning and Design.

Some grasses and weeds thrive in the heat. Crabgrass, for instance, is a warm-season annual grass that thrives in driveway and patio cracks. Its seeds are very tiny and can penetrate the smallest cracks. Quackgrass is even more diabolical because it is a perennial weed that can survive even if just small pieces of root remain beneath the slab. If the exposed portion of the grass is removed, a new shoot will pop up in no time at all.

Click Play to Learn How to Get Rid of Weeds

The Spruce / Jayme Burrows