How to Stop Weeds in Block Paving
- 1). Spray the weeds with an herbicide. A glyphosate-based broad spectrum herbicide will kill any weeds (or plants) it comes into contact with. Follow the manufacturer's instructions for application rates and amounts. For a more natural option, pour lemon juice or boiling water onto the weeds.
- 2). Monitor the paving stones for regrowth over the next two weeks. Persistent perennial weeds growing up from the soil between pavers may require one or more treatments.
- 3). Pull up the weeds once they're dead.
- 4). Control weed seed lying dormant in the soil between pavers with corn gluten meal. Corn gluten meal is available at health stores and home and garden centers (labeled as a weed killer). Sprinkle it in the joints in early spring as soon as temperatures begin to warm, three to five weeks before the weeds sprout. If it rains within 72 hours after applying the corn gluten meal, re-apply the layer.
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