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Question: 569-2611
My terra-cotta statue has green algae. The Dutch Boy is about two and a half feet tall. I was told to use sodium silicate. Will it work? Bob, Uncasville, CT

Mort's Answer:
Hydrated lime, sour milk or a good alcohol rub will get it off, as well. A more simple solution would be to let the statue face south for a while. Algae grow on shaded surfaces but it is not harmful. It is nitrogen fixing and can be beneficial ion clay pots. Sunshine will dry it up. If it were an Irish Elf, I would be tempted to leave it.

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