Belladonna seed

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

In-game examine text: "Also known as Deadly Nightshade - plant in a belladonna patch."

It has a Grand Exchange buy limit of 200 every four hours, a high alchemy value of 106 gp, and item ID 5281.

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Belladonna Seed shows an active flip setup with a margin of +37 gp and 8,847 trades over the last 24 hours.

At the buy limit of 200 every four hours, max profit per cycle is about 7.4k gp — high margin with healthy liquidity.