Cut up or chopped up celery will last up to 2 weeks in the fridge before it goes bad.
To maximize the life of the chopped up or cut up celery in the fridge place the cut up or chopped up celery into a plastic bag or covered container.
This will help seal in moisture and place the celery in the crisper if you have one.
Fresh celery will last for up to 4 weeks when left out at room temperature and about the same time in the fridge.
Keeping the celery in the fridge and wrapped in aluminum foil will help keep the celery hydrated so that it does not dry out.
The best way to keep celery fresh longer is to wrap the whole celery stalks in some aluminum foil and then place the aluminum foil wrapped celery into the crisper portion of your fridge.
To keep celery fresh longer it needs to be kept hydrated and by wrapping the celery stalks in aluminum foil helps seal in the moisture so the celery does not dry out.
And keeping the celery in the crisper portion of the fridge helps add moisture to the celery.
It's OK to eat old celery as long as the celery is not actually spoiled.
Celery can naturally go limp when stored in the refrigerator and if the celery is just limp or is turning a slightly different color then it's still okay to eat the old celery.
Just make sure there's no mold on the old celery and no bad smells to the old celery.
If the celery does smell bad or has a bad taste to it then it's bad and should not be eaten.
If the celery has a bit of mold on it you can break off or cut off the moldy part of the celery and eat the rest of the celery.
When celery is spoiling or going bad the bad or spoiled celery will typically become soft, and discolored and become easy to bend.
If in doubt about the old celery being too bad to eat then throw it out to avoid getting sick.