A recent discussion on effective methods for removing weeds from block paving has highlighted differing viewpoints among gardening enthusiasts and experts. The debate emerged following advice from gardening specialist Ciar Byrne, who recommended a simple home remedy involving water and salt. Byrne suggested spraying the weeds with water to help the salt adhere, then sprinkling salt directly on the affected areas. This approach is deemed suitable for hard surfaces like block paving and pathways but is not recommended for flowerbeds due to the risk of damaging desirable plants.

However, not all community members agree with this method. Kim Fairweather, a reader who wrote in with her thoughts, expressed surprise at Byrne’s recommendation but acknowledged the practical benefits of the water-and-salt technique specifically for block paving surfaces.

In contrast, the Royal Horticultural Society (RHS) advises against the use of over-the-counter chemical weedkillers. Instead, the RHS recommends manual removal by hand to avoid environmental and soil health concerns associated with chemical treatments. This recommendation was challenged by another reader, Ken Lazenby of Leyland, Lancashire, who pointed out the difficulties of manual weeding on block paving. Lazenby argued that hand weeding often results in breaking the weed, leaving roots intact and allowing regrowth. Based on his personal experience with block paving, he favors the use of chemical weedkillers as a more effective solution.

This exchange reflects the broader tension between traditional, chemical-free gardening methods and the practical challenges home gardeners face in managing persistent weed growth on paved surfaces. While salt and water offer a non-chemical option for hard areas, the long-term impacts of salt on soil and nearby plants remain a concern for some. Similarly, reliance on chemical herbicides continues to be questioned by those prioritizing environmental sustainability.

Ultimately, gardeners must weigh the pros and cons of each method in the context of their own settings, balancing effectiveness with potential environmental effects.