Bill Skinner
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My ponds have duckweed. Usually, it's just a few sprinkles here and there. However, if they get fertilized, they explode and will cover the entire surface of the pond, sometimes up to an inch (25mm) thick. They are free drifting, sometimes the wind will pile them up thicker. That's when they are easiest to harvest, you can get a lot without much work. And it will take a lot when you boil them that hot for a meal.
My neighbor fertilized his hayfield this spring, he used commercial fertilizer. Then we got 30+ inches (about 1m)of rain in about three months and we got some of the run off in one of my ponds.
When his hay field was a pasture, we got a massive out break every wet year or every time following a hurricane.
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