Mrs M: I had a 12 ft concrete stock tank that was spring fed it had been in 40 years when I got the place. The bottom had about six inches of silt. The sides were covered with moss and lichen - On the bottom I had a 15 inch stand of wild water cress. year round. In winter I covered it with 8mil clear greenhouse glaze. Though in winter seldom picked it except for Christmas. During summer I picked it all the time - and ate a sprig everytime I
took a cup of cold water to drink. People used to drive in on Sunday and ask if they could drink and have a gal of water
They had been coming for years. One day
I saw a woman pulling out all the cress and I came running Stop what are you doing- I /m pulling these disgusting weeds.
After that I had to block the driveway when I left with two saw horses.