Posted: 04/02/2016 at 10:29
Hi Dago. I think you may be paying too much for your grobags. Round here they seem to be £2.99 each at the moment and will probably be on an even better offer at the time most people are buying. Why not try an experiment and reuse some and compare with using new?
I did an experiment last year comparing the ordinary grobags (which always look very small to me) with the "giant tomato planters". To my surprise the ordinary bags did marginally better and were a lot cheaper so I won't be wasting my money on the giant planters this year!