Celery help ?

[cornykev]

Hi all, I acquired some celery plants from a lady on our site, they are growing healthily enough and have had loads of water, is there anyway I can tell if they are self blanching or not, they are in a shallow trench to hold the water, I've weeded them and pulled off tiny sticks and tied them up, but the lady seems to have left our site so I just need some info as I have never grown them before.             

[davyw1]

you wont be able tell kev so blanch them by collaring two thirds up the plant

[cornykev]

Cheers Davy.