"tedius" writes:
would someone know if cellery is an annual or not?

It is usually treated as an annual. But if you leave it in the ground,
and it doesn't bolt to seed, after a year it will have developed small
celery plants around the perimeter of its base. These can be carefully
broken off and planted out as new seedlings, provided you take them with
their roots. If you don't break the pups off, they will grow in situ
into mature plants and after two years what was a single plant will be a
circle of 5 or 6 plants, with the original one now gone. It may not have
actually seeded though, if memory serves me correctly.

On the other hand, if you plant out celery seedlings in mid-summer, you
will likely find that many bolt to seed without growing into a mature-
sized plant.

Mostly, people ask how to prevent their plants from going to seed!
--
John Savage (news address invalid; keep news replies in newsgroup)