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How to make plant markers from broken pots
Identify an area in your garden where pot plant markers will be effective.
This will help you to gain an idea of how many markers to make. Typically you'll need a bit of space so you can surround the planted greenery with the pot, however you could trim a potted plant in a smaller garden using a smaller size.
Measure the area around the specific plant. A tape measure is handy but even eyeballing the area to determine the pot size will work well too.