window box liners

I'm no expert at planting window boxes, but last year I had success planting our window box.  We have a small window box that holds 4 geranium plants. I always used to try and find small containers to fit, but the plants never thrived. I decided to try plastic bags.  I start with a bag for each plant.  The bag should be a little bigger than the root ball you are planting.   I took four bags that the newspaper is delivered in and folded the bag down to the height of the window box, last year I used ziplock bags and that worked great too.  I cut the corners of each bag for drainage.  I put dirt in the bottom, then put the plant in the bag and pack dirt all around the sides of the root ball so it's pretty compact.  Then I place them side by side in the window box.

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a bag for each plant

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fold the bag down to the height of your window box

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cut the corners of each bag for drainage

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put dirt in the bottom of the bag

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put the plant in the bag and pack dirt all around the sides of the root ball so it's pretty compact

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Place them side by side in the window box. This picture was taken after about a month.