garbage, refuse, (kokuji)
埖 centers on waste material: garbage or refuse. It is a kokuji created in Japan to express this idea.
埖 is a Japanese kokuji, combining 土 (earth, soil) with 花 (flower) to suggest something discarded into the earth, like garbage or refuse. The exact historical origin is not well documented, but the component choice is consistent with its meaning.
Picture flowers 花 being thrown onto the earth 土 and turning into garbage. The soil is littered with wilted flowers, making it a refuse heap.
For ごみ, imagine a pile of garbage where someone left a gooey mess: gooey mess -> ごみ, and the earth 土 is covered with rotting flowers 花.
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