Creating good drainage in solid urban planter boxes is essential for plant health. Since excess water cannot escape through holes, you must build an internal drainage system. Start by adding a deep layer of coarse materials at the bottom, such as lava rocks, gravel, or broken pottery. This layer acts as a reservoir for excess water, keeping it away from the root zone. Next, place a permeable landscape fabric or mesh screen over the drainage layer to prevent soil from washing down and clogging it. Fill the planter with a well-draining potting mix, ideally one amended with perlite or sand to improve aeration. Be especially careful with watering; always check soil moisture a few inches down before adding more water. Choosing plants tolerant of moist conditions, like certain ferns or swamp milkweed, can also increase your success. Regularly monitor your plants for signs of overwatering, such as yellowing leaves, and adjust your care routine accordingly.
How can I create good drainage in urban planter boxes that don't have holes?
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