Seaweed spore

A seaweed spore - plant in a seaweed patch. Seaweed spore is a members-only item traded on the Old School RuneScape Grand Exchange.

Seaweed spore sells for a mere 209 gp on the Grand Exchange, so profit here comes from flipping in bulk rather than large per-item margins.

Seaweed spore maintains moderate GE activity with 1,535 trades — expect fills within 5-15 minutes on average. With a buy limit of 600 every 4 hours, you can trade in large quantities per session. At the current margin, flipping the full buy limit yields up to 107,400 gp profit every 4 hours.

Seaweed spore currently has a positive margin of 179 gp after the GE tax, resulting in an ROI of 85.7%. Seaweed spore scores 9/10 on our flip rating scale, reflecting an excellent combination of margin, volume, and fill speed. The price has dropped 46.4% in the last hour, which could signal a buying opportunity if the margin improves.

Seaweed spore has a high alchemy value of 12 gp, but at the current buy price it is not profitable to alch.

The price has dropped sharply — down 46.4% in the last hour. This could signal a sell-off or increased supply; it may be worth waiting for the price to stabilise before entering a flip.

With a tight spread, instant buy-and-sell is a viable approach for Seaweed spore. Undercutting the instant buy by a small amount (1 GP to a few hundred GP) is usually enough to get priority in the queue.

Track margins and find profitable trades with the Flip Finder. Use the High Alch Calculator to check whether this item is worth alching as an alternative exit strategy.

Use the flip calculator above to estimate your profit based on quantity. Set a price alert to get notified when the margin changes, or add this item to your watchlist for quick access.