The message
from "p.mc" contains these words:

Hi

I planted some leeks about 5 months ago, and they're about 3 quarters of an
inch thick now.
should I harvest them now or will the frosts kill them?

Advice welcome

--

Regards
p.mc

The frost won't kill them. Leeks are grown to be harvested during the winter.

However, some are hardier than others and different varieties are ready
at different times during the winter. If yours is an early variety it
would be best to pick and eat them now but if they're a late variety
they will go on getting heavier and thicker and might be best left a
while longer.

It would be very helpful if you knew what variety they are and what
their season of use is.

Janet G