"JB" wrote
Or more specifically ...

I was under the impression that potatoes, at least earlies, could be
planted as of St Patrick's day. Given that it's still cold and frosty
is it safe to plant these yet or will they suffer if we get another
week of weather like this?

We intend to plant our "earlies" any day soon and have planted them at about
this time every year.

--
Regards
Bob Hobden
17mls W. of London.UK