I’m not sure if fabric shopping bags would work. I bought square grow pots and I absolutely hate them. They never stayed square from day one. They bow out in a very strange way and it causes the tops to suck in making it a PIA to water. The bags I got were supposed to be 12’x12’ a standard shopping bag tend to be 10x6 the bowing would probably cause major issues on the short side. I’m also guessing training a plant on the 6’ side would become quite difficult also.
I’ve never used a shopping bag but just giving you the experience I’m having .
Depends inside the suck as it’s hard to find any tray that will hold 10 gallon or larger fabric bags so they leak.
Outside they are great. U can find those bags on Amazon and eBay pretty cheap.
But if you live on a farm ol boy then you probably got a ton of five gallon buckets that work great indoors with the handle and any seafood or crawfish tray from the grocery store fits them fine with deep sides.
For starters those fabric bags u get from the shops they start to break down when they get wet and they wouldnt be stable they have no strength in the sides for holding soil ur beat of with fabric pots but if u dont have any and u want to use what you have well thats all good if u have those black plastic pots u can use them if not u can use a bucket
If u want good fabric bags on Amazon Usa there is a really good bag its a lst bag from basement autoflowers there strong they have a renforced rim that has eyelets for doing lst training and there made in Canada
Sorry I was referring to the Walmart bags with runoff and such… the bag u use are ideal and I will probably go that route once the fabric ones I have take a shyt. I got round fabric bags for cheap and it came with 10 so probably won’t upgrade for a bit @Hellraiser