Posted: 20/02/2015 at 10:24
I've not seen the campaign re contamination of urban grown crops, but I am aware that there is a not insignificant number of inner city gardens, particularly those on former brownfield sites that show contamination (particularly lead) and I would really think twice about eating veg grown in them. There are also gardens which have had such a large amount of dog and cat faeces on them that I wouldn't garden in them.
I've not had a problem with supermarket carrots keeping - I buy carrots from various supermarkets and our local farm shop and occasionally get given a bag by farming brother. We keep them in the garage in the winter and in the bottom of the fridge in the summer for weeks at a time and the only time I've ever had any go slimy was when they were left in a plastic bag.