Our largest urban planter boxes are designed to accommodate substantial soil volumes, typically holding between 20 to 50 cubic feet of soil depending on the specific model and dimensions. This capacity allows for deep root growth and healthy plant development in city environments where space is often limited. For example, our popular "Metro-Gro" planter measures 48 inches long by 24 inches wide by 24 inches deep, providing exactly 24 cubic feet of soil space when filled to about 2 inches from the top. This volume is sufficient for growing small trees, large shrubs, or multiple vegetable plants simultaneously. When calculating soil needs, remember that most gardening soils weigh approximately 40 pounds per cubic foot when dry, and up to 50 pounds when moist. We recommend using a high-quality potting mix specifically formulated for container gardening, as it provides better drainage and aeration than regular garden soil. For those planning rooftop or balcony gardens, consider the weight distribution and ensure your structure can support the planter when fully saturated with soil and plants.
How much soil do your largest urban planter boxes typically hold?
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