In article , K
writes
Agree supermarket.
In a pond I've always just chucked it in. It's one of the ways to
reduce algae by reducing the nutrient level - chuck in a handful of
watercress at the beginning of summer, and harvest by the armful though
the rest of the season.

How do you ensure the stream is not polluted Kay? Do you know the source
of these streams? I have visions of people chucking in watercress
wherever they have running water and that may not be advisable
Janet

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Janet Tweedy
Amersham Gardening Association
http://www.amersham-gardening.net