EastScape Wikibuilt from the game itself

Bog rice seeds

Where to find it: The Boardwalk (Deckhand; Clawhand), Cabin Coast (Deckhand), Pirate's Pier (Deckhand; Clawhand), The Lighthouse (Clawhand), Shipwreck Isle (Clawhand), Skull Isle (Clawhand).

“Plant them on your island (Harvesting 70). They grow bog rice, and give their seeds back.”

Dropped by

MonsterLevelHow manyChance a killRoll
Deckhand6911.3%Own roll
Clawhand7411.3%Own roll

Grows

Plant it on your island's plots (Harvesting 70): ready in about 300 minutes, logged in or not.