The answer to a stone walkway having weeds is that weeds can commonly grow in the cracks and crevices of stone walkways. Symptoms include unsightly weeds sprouting up between the stones, disrupting the clean and uniform appearance of the walkway. Solutions include regularly pulling weeds by hand, applying a weed-killing herbicide, or replacing the affected stones.
For DIY homeowners, pulling weeds by hand or applying a targeted weed killer is a good option. However, for more severe weed infestations or if the walkway needs major repairs, it's best to call a professional landscaper to properly address the issue and ensure the long-term health and appearance of the walkway.