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Here is a simple way to keep slimy green algae from growing in fountains and birdbaths. When you clean the birdbath or fountain and fill it with fresh water, add lavender flowers. Bind about eight lavender flowers together with a string or rubber band and lay the bundle in the water.
The anti fungal properties in the lavender will help keep the algae away for about two weeks. The lavender won’t stop algae already growing, but it will stop new growth. So it is important to wash out the fountain before adding the lavender bundle to get the best results.
