Posted: 03/11/2014 at 17:24
I grow 1st earliers and 2nd earliers in potato sacks, cheap from pound shop & wilko (I'm sure other outlets are available) the sacks will accomodate 3 chitted spuds. The sacks only last 2 maybe 3 years but far cheaper than GC ones. I grow my spuds in multi purpose compost and add some organic potato feed and I don't let them dry out. I don't get a huge crop but all are disease free and no nasties. I normally throw the compost on the flower beds after I've harvested my spuds. This year for the first time I have reused the sacks & compost and added more potato feed then planted a late crop of carrots in them and I'm thrilled with carrots I'm pulling up. When they are finished the compost will go on the flower bed.
I've also grow carrots earlier in the season in the same sort of sacks and no root fly
Edit. I should have said I emptied the spuds out of the sacks onto plastic when I harvested them and removed all the roots and then re-filled the sacks with the original compost.