Seaweed spore

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"Spores" redirects here. For the spores used to grow mushrooms, see mushroom spore.
Seaweed spore detail.png

Seaweed spores are used in the Farming skill and require level 23 in the skill to grow them. They are planted at the seaweed patch in the underwater area of Fossil Island. Players can pay Mernia to protect this patch by giving her 200 numulites.

Once fully grown, which takes approximately 40 minutes, players will be able to harvest giant seaweeds. A minimum of three can be collected per patch, with the average being around 15–30 (if super or ultracompost is used; 8-16 if compost is not used), depending on one's Farming level. Specifically, the patch has three "lives" by default, and each tier of compost adds one extra. The chance to not consume a life upon harvest is 64.1% at level 23 and 82% at level 99, using linear interpolation for other levels[1]. Magic secateurs and the farming cape do not have an effect[2].

Sources[edit | edit source]

Seaweed spores can be obtained via the following methods:

Farming info[edit | edit source]

Seaweed spore
Farming level 23
Patch Seaweed
Seeds per 1 seed
Payment 200 Numulites
Time 40 min (4x10 min)
Crop Giant seaweed
539
Experience
Planting 19
Harvesting 21

Drop sources[edit | edit source]

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SourceLevelQuantityRarity
Ammonite Crab25 Multicombat.png21/128
Ancient Wyvern210 Multicombat.png3–24Uncommon
Lobstrosity68 Multicombat.png5Uncommon
Long-tailed Wyvern152 Multicombat.png122/123
Spitting Wyvern139 Multicombat.png122/123
Taloned Wyvern147 Multicombat.png122/123

Growth stages[edit | edit source]

Stage Image Diseased Dead
1 Giant seaweed stage 1.png N/A N/A
2 Giant seaweed stage 2.png Giant seaweed stage 2 (diseased).png Giant seaweed stage 2 (dead).png
3 Giant seaweed stage 3.png Giant seaweed stage 3 (diseased).png Giant seaweed stage 3 (dead).png
4 Giant seaweed stage 4.png Giant seaweed stage 4 (diseased).png Giant seaweed stage 4 (dead).png
5 Giant seaweed stage 5.png N/A N/A

Store locations[edit | edit source]

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SellerLocationNumber
in stock
Price
sold at
Price
bought at
Members?
Mairin's MarketUnderwater1,000Mermaid's tear 5.png 20N/AP2P icon.png

Average yield per level[edit | edit source]

Farming.png: Inventory image of FarmingLevel Base Compost Super Ultra
23 8.26 11.01 13.76 16.52
30 8.63 11.51 14.38 17.26
40 9.25 12.34 15.42 18.51
50 10.11 13.47 16.84 20.21
60 10.97 14.63 18.29 21.94
70 12.00 16.00 20.00 24.00
80 13.24 17.66 22.07 26.48
90 14.77 19.69 24.62 29.54
99 16.70 22.26 27.83 33.39

Trivia[edit | edit source]

References[edit | edit source]

  1. Jagex. Mod Ash's Twitter account. 12 October 2018. Mod Ash: "3 [lives] as standard. Add 1-3 for the tier of compost you used. The chance scales from 59% - 82% of NOT taking a life when you get an item, as your level goes from 1-99."
  2. Jagex. Mod Ash's Twitter account. 25 Jun 2018. Mod Ash: "No, doesn't look like it. I guess you weren't expected to have them equipped down there."