Proper drainage is important for the health of plants in planters. Here are some materials that can be used at the bottom of a planter for drainage:
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Broken Pottery: Broken pieces of pot can be used at the bottom of a planter to prevent compost loss out of the drainage holes and stop the drainage holes from becoming blocked.
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Packing Materials: Packing materials such as bubble wrap, packing peanuts, and recycled foam can be used to create a false bottom or place something lightweight in the bottom one-quarter to one-third of the pot to keep it easier to move, save on soil and maintain the health of your plant.
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Natural Materials: Natural materials such as pine cones, acorns, chips of wood, broken sticks, leaves, river rocks, and tree bark can be used to aid drainage.
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Coffee Filters: Coffee filters are a great solution to support drainage and keep the soil from flowing out of the bottom of your planter.
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Cheesecloth: A length of cheesecloth is also a good solution for the bottom of a planter or a nut milk bag.
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Coco Coir: Coco coir is a great option for adding extra drainage to your soil mix. It is peat-free and made from coconut husks, making it an environmentally friendly option.
It is important to note that drainage holes are essential in every pot, container, trough, or planter to allow water to readily flow out. If there are concerns about compost finding its way down to the drainage holes and potentially blocking them, then the likes of newspaper, fabric, paper, or even coffee filters can be used to line the base of the planter and give a protective cover to the holes.
It is also important to keep in mind that drainage needs of different plants vary, and the weight of the pot and where it will be placed should be considered when adding materials to improve drainage in plant pots.
