I use grow bags but only with an added ring on top to make it a deeper level of compost otherwise I find that they just don't have enough compost and I don't buy the big heavy thick ones. You can use two on top of each other as an alternative but I've never tried it.

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Some of us live in the past, always talking about back then. Some of us live in the future, always planning what we are going to do. And, then there are those, who neither look behind or ahead, but just enjoy the moment of right now.

Which one are you and is it how you want to be?