Citrus peels decompose in a compost pile. Composting all forms of citrus, the peels and rotted fruit, takes time. The result is a rich humus material you can add directly added to any garden bed. While citrus has a high acidity level, the final compost is neutral in its pH. The decomposition of citrus peels takes a few months longer than regular leafy types of waste. The overall end result of composting is better than throwing the material into a local landfill.
Dig into the upper one third of an established compost pile with the shovel. Remove the material and set it to the side.
Place a single layer of the citrus peels on top of the existing compost material. Cover the peels with 1 to 2 inches of compost.
Continue until all citrus peels have been added in alternating layers of peels and compost. Place the remaining material over the compost pile.
Bury the citrus peelings in several locations around the garden site as an alternative to adding them to a compost pile. The depth of the holes ranges from a few inches to a foot deep. Buried citrus peels take a few months to decompose.
Cultivate the buried compost holes one month before planting in those areas. In other words, buried citrus peels must be left in the ground three to four months before cultivation for planting.