Measuring and cutting the grow-bag material to size

Upcycled plant pots with air-pruning in mind – Part 2

In my Part 1 post I explained how I had created my upcycled air-pruning plant pots from 4 pint milk cartons.

Making air-pruning plant pots from milk cartons - I decided to cut different-shaped vents in some of the pots
Making air-pruning plant pots from milk cartons – I decided to cut different-shaped vents in some of the pots

The next stage was to create some breathable fabric grow-bags to fit into the air-pruning plant pots … the whole idea is to allow air to reach the plant’s roots. In the video where I originally saw the air-pruning idea, they had made use of recycled woven polypropylene shopping bags. As with the containers, I needed something much smaller. And, as before too, I really wanted to use upcycled materials.

Old jogging pants were ideal to make grow-bags to fit the milk carton air-pruning plant pots
Old jogging pants were ideal to make grow-bags to fit the milk carton air-pruning plant pots

My solution for this part of the project was to use some of my sons’ old and worn jogging pants from my upcycling ragbag. The legs of these old cotton pants were just the thing to fit in my air-pruning plant pots.

Measuring and cutting the grow-bag material to size
Measuring and cutting the grow-bag material to size

I measured and cut off the required length, using one of the prepared milk cartons as a guide. This gave me a fabric tube which I closed at one end by simply tying a piece of cotton string around it. And that was it done! I had one simple and upcycled grow-bag ready to insert into its air-pruning plant pot.

I simply tied the bottom of the grow-bag together with a piece of cotton string
I simply tied the bottom of the grow-bag together with a piece of cotton string

In order to maximise the use of the jogging pant material I had available, I did resort to a little bit of sewing to create some of the tubes, but they all ended up roughly the same shape and size. The fabric grow-bags were then carefully inserted into each of the air-pruning plant pots.

I inserted the grow-bag into the air-pruning plant pot and secured the grow-bag to the pot
I inserted the grow-bag into the air-pruning plant pot and secured the grow-bag to the pot
I had made the tubes long enough so that they would amply overlap the top of the plant pots. My thinking here was that this would prevent the grow-bag from sinking down inside of the pot. To assist further with securing the grow-bags in position I made two small holes in the overlapping part of the grow-bag at either side of the milk carton’s handle using my stitch ripper.

I took another piece of string and threaded this as a doubled length through one hole, behind the carton handle and back out through the second hole. I removed the yarn needle and tied the ends of the string together firmly in a knot. I then created a string loop by threading the knot back through the loop at the other side of the handle to finish it off. As well as helping to secure the grow-bag in place, I thought the string loop might be useful when it comes to fixing the plant pot in place in my back yard.

My upcycled air-pruning plant pots are now fitted with their upcycled grow-bags and ready to be filled with compost. I’ll show you more on my air-pruning plant pots project very soon.

J Peggy Taylor

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