The upside down grow bags I made were simply made from cut up leggings from corduroy and woollen trousers and the side seams were sewn together. Then I added ahandle forhanging on a tree or wall. Strawberries seem to thrive better off the ground and have less trouble with snails.
Push your plant through paper or fabric to prevent soil escaping from the bottom slit. Push the plant through the upside down planter.I like to ensure good drainage by cutting holes at the bottom of the bag, throw in a few small stones or volcanic rock dust for healthy soil, add composted soil then earth soil to top off the bag.
Optional: Next insert a water bottle with holes for internal drip irrigation. Strawberries and blueberries, mustard greens and brussel sprouts did not like the sea weed fertiliser very much and leaves browned at the edges or died. However, they seemed to grow more new young leaves using fish emulsion.
Check out the sweeter, higher brix blueberry experiment by Farmer Bob Wilt when he stopped using chemical fertilisers and switched to an organic fertiliser for his blueberries.The fava beans kept growing rapidly with little watering and took in any seaweed or wood ash water concoction without a fuss. I experimented using wood ash and ground sea salt mixture. Only the fava beans grew well with this mixture.
After several months sitting in the bags, I forgot to water them and they did not thrive until I returned the container and bag plants into composted soil. The grow bags certainly give all the seedlings a head start. They are stronger than other plants planted straight into the ground. Someone suggested giving beer to snails to drive them into a drunken stupor and ensure a speedy death. I think I just might try that!