Plant it to grow Pebbles Block. From a yabba dabba do time! A very fast-growing seed that only grows under the harvest moon. When harvested the trees have an increased chance of dropping a Peace Mooncake.
Pebbles Block Seed price in Growtopia: sells for about 8/WL, buyers pay about 200/WL (median of 2 offers from community Discords, past 30 days). Live price chart and the latest buy and sell offers.
Recently sold at: BUYPEBBLESS