"Cat(h)" wrote in
ps.com:

I had 1/2 a row of salsify still in the ground, and figured though
they probably would be terribly woody by now, it might just be worth
cleaning out the roots and seeing what could be salvaged. Well, after
nearly 10 months in the ground, including the entire winter, they are
still quite delicious.

That's one of the prime virtues of salsify that caused it
to be popular in the first place: it is available at the end
of winter when most other vegetables are only available if
driet/tinned/preserved.

Its pleasant taste (and some Vitamin C content) didn't do any
harm either.