Grow It Yourself Diary: Week 71
If you sowed celery earlier in the year, it should be ready now and it will do fine in the ground until the first frost.
The main thing to bear in mind in terms of tending celery is that it needs a consistent supply of water to produce good yields and it does not like weeds.
Harvest celery by cutting at ground level – make sure that you do so in such a way as to keep the stems together.
Celery will keep for a number of weeks in the fridge and will, in fact, continue to blanch once picked.
Wash in cold water and dry it carefully before putting it in the fridge. You can also harvest individual stems (rather than the whole plant) if you wish.
The great issue for celery lovers is how to preserve the crop – it doesn't store well in the ground, particularly after the first frosts; and it doesn't store well out of the ground either.
Probably the best method of preserving celery is to freeze it – it freezes relatively well but will lose some of its crispness when thawed out, so it's probably only usable in cooking (soups and stews, etc) as opposed to fresh.