You need to watch out for giardilla (sp?) It can end up in your pond in many
different ways.. in my case it was from plants I buy every spring from the
local pond place.. it's outdoors and they have these huge outdoor "lakes"..
(they also allow people to fish in them, they're pretty big).. and a couple
irrigation canals run alongside them..

Teeb

"BD" wrote in message
...
I don't know if this has been asked before but can anything edible be
grown
in a small garden pond? I was thinking of watercress maybe. Even better
would be something that could choke the duckweed. I am in the UK by the
way.
Cheers - Bo.