Remove plastic packaging from celery in the UK

Us and our families drink celery juice every morning for its healing properties and use 2-4 bunches each per day. Between us that is 2,920 packets thrown away a year, minimum.
Most of our celery is bought from Sainsbury's and if they stop putting it in plastic we will commit to buying all our celery from them , as will our families and encouraging our followers to do so also as we are documenting our healing via social media and a blog.
Of all the all the Americans we see posting about juicing, their celery is always tied with string in the stores so why in the UK are we causing ours to sweat in plastic and damaging our environment in such a catastrophic way?!