Use Baking Soda to Combat Fungal Plant Diseases at Home

Home gardeners facing issues with fungal diseases, such as black spot, can find a simple solution using common household ingredients. Gardening expert Ish, a designer and popular TikTok creator, shared a homemade spray formula that utilizes baking soda and washing up liquid to combat these issues naturally, without resorting to chemical products.

Black spot is a fungal disease characterized by purple and black spots on leaves, which can lead to premature leaf drop. As noted by the Royal Horticultural Society (RHS), these symptoms typically present during spring when conditions are ripe for fungal growth. The RHS emphasizes the importance of addressing such diseases promptly to maintain plant health.

In a recent video, Ish highlighted the versatility of baking soda, stating, “Fight fungal infections, protect against weeds and ants, and even clean your tools with only one thing – baking soda.” The gardening expert encourages beginner gardeners to incorporate this ingredient into their maintenance routines.

To create an effective antifungal spray, mix one teaspoon of baking soda and half a teaspoon of washing up liquid in half a litre of water within a spray bottle. This concoction targets black spot and other fungal issues, such as powdery mildew. The baking soda alters the pH on the leaf surface, making it less conducive for the black spot fungus to thrive. Meanwhile, the washing up liquid ensures that the solution adheres effectively to the leaves, allowing for better coverage.

Gardeners should apply the mixture generously to affected areas and reapply after rainfall to maintain its effectiveness. For ongoing prevention, the RHS advises maintaining good garden hygiene, which includes removing fallen leaves in the autumn and disposing of any remaining leaves on plants during winter months. This practice helps minimize the potential for disease recurrence and supports overall plant health.

The RHS also cautions against the use of commercial fungicides, as they can adversely affect biodiversity and soil health. Emphasizing a more natural approach, the society suggests fostering “natural enemies” of pests and diseases as part of an integrated pest management strategy.

By employing these straightforward methods, gardeners can effectively manage fungal diseases while contributing to a more sustainable gardening practice.