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Stimulates leaf production. Guaranteed to increase growth rate by at least 10%. Mix into tilled soil.
Source: Pierre'sCraftingBone Mill
Sell Price: Gold.png20g
Recipe Source(s): Farming Skill Icon.png Farming Level 3
Ingredients: Pine Tar.png Pine Tar (1)Clam.png Clam (1)
Produces: 5 Speed-Gro per craft

Speed-Gro is a Fertilizer that helps by speeding crop growth. It can be crafted, obtained from a Bone Mill, or purchased from Pierre's for Gold.png100g starting on Spring 15th of year 1.[1] Twenty Speed-Gro is the reward for completing the Bundle Green.png Spring Crops Bundle in the Pantry.

Speed-Gro can be placed on tilled soil before or after planting a seed, or at any stage of crop growth.

Speed-Gro Cost

Crafting Speed-Gro is always cheaper than purchasing it. The table below compares the cost of crafting 5 Speed-Gro against purchasing them at Pierre's. The cost of crafting is the sell price of the constituent ingredients.

Clam.png Clam Quality Crafting Pierre Icon.png Pierre's
Normal Gold.png150g Gold.png500g
Silver Quality.png Silver Gold.png162g
Gold Quality.png Gold Gold.png175g
Iridium Quality.png Iridium Gold.png200g
Tapper Icon.png Tapper
Normal Gold.png175g
Silver Quality.png Silver Gold.png187g
Gold Quality.png Gold Gold.png200g
Iridium Quality.png Iridium Gold.png225g


Villager Reactions


Speed-Gro is not used in any bundles, but 20 Speed-Gro is the reward for completing the Bundle Green.png Spring Crops Bundle in the Pantry.


Speed-Gro can be used in the spool of the Sewing Machine to create the dyeable High-Waisted Shirt. Shirt174.png


Speed-Gro is not used in any quests.


  • 1.4: Speed-Gro now has an effect if used after planting a seed. Can now be used in Tailoring.


  1. See SeedShop::shopStock in the game code.