blue-green algae toxicity

Asked August 18, 2019, 3:58 PM EDT

I see no articles on this topic?

Maryland blue-green algae ponds and water gardens blue-green algae toxicity

3 Responses

Thank you for contacting eXtension. There best information on this topic locally will come from the Department of Natural Resources. The link below is a good overview:

Thank you. I've read the text at the link as well as a couple of the PDFs found there.

I was interested as the question arose on a birding listserve as to whether b-g algae could be found in water set out for birds at levels that might prove a problem. A proposed solution was to treat the water sources with Clorox, but the FAQ text mentions no control methods.

Find the listserve posts at:;id=1542460;id=1542508

We have no expertise about this. Blue-green algae commonly occurs in ponds or the Bay.

In a birdbath, we'd recommend cleaning periodically and filling with fresh water.