echinosum wrote:

What kind of artichokes are you growing?

If you are growing Jerusalem artichokes, and are looking in the roots
for some tubers to eat, then you dug them up too early, they form in
autumn. They are very hardy.

If you are growing globe artichokes, and are looking for a large
thistle bud, then those should have started forming back in the spring
ready for harvest from late spring through to autumn. If you planted a
small plant this spring, you were probably too late to get any crop
this year. From personal experience, they are hardier than Mr Dukes
says. Wikipedia says zone 7. Since they are commonly grown in France
and (less commonly) England, both now and in mediaeval times, that must
be true.

The tag says Green Globe. The plants are clusters of thistle-like
leaves, sort of grayish green.