Cactus seed

Cactus Seed is a members-only item on the OSRS Grand Exchange in the seeds category.

In-game examine text: "A Cactus seed - plant in a cactus patch."

It has a Grand Exchange buy limit of 200 every four hours, a high alchemy value of 59 gp, and item ID 5280.

View on OSRS Wiki

Cactus Seed shows an active flip setup with a margin of +46 gp and 25,111 trades over the last 24 hours.

At the buy limit of 200 every four hours, max profit per cycle is about 9.2k gp — high margin with healthy liquidity.