Speed-Gro

Speed-Gro

Stimulates leaf production. Guaranteed to increase growth rate by at least 10%. Mix into tilled soil.
Information
Source	Pierre's • Crafting • Bone Mill
Sell Price	data-sort-value="20">20g
Recipe
Recipe Source(s)	Farming Level 3
Ingredients	Pine Tar (1) Moss (5)
Produces	5 Speed-Gro per craft

Speed-Gro is a Fertilizer that speeds crop growth by 10% (or a total of 20% with the Agriculturist Profession)^[1]. It can be crafted, obtained from a Bone Mill, or purchased from Pierre's for data-sort-value="100">100g starting on Spring 15th of year 1.^[2] Twenty Speed-Gro is the reward for completing the 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. It does not reduce time between harvests for multi-harvest crops.

Applying Speed-Gro days after planting a seed still decreases the time it takes to fully grow, but it reduces a fixed amount of days per stage for each crop regardless of the day it's applied, and the reduction in stages that the crop has already passed will not retroactively apply. Combined with the fact that the reduction disproportionately affects earlier stages more, this means that its reduction to the rest of the growth time is much lower than the advertised percentage of 10%.^[3].

Gifting

Villager Reactions
Dislike	Abigail • Alex • Caroline • Clint • Demetrius • Dwarf • Elliott • Emily • Evelyn • George • Gus • Haley • Harvey • Jas • Jodi • Kent • Krobus • Leah • Leo • Lewis • Linus • Marnie • Maru • Pam • Penny • Pierre • Robin • Sam • Sandy • Sebastian • Shane • Vincent • Willy • Wizard

Bundles

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

Tailoring

Speed-Gro can be used in the spool of the Sewing Machine to create the dyeable High-Waisted Shirt. It can be used in dyeing, serving as an orange dye at the dye pots, located in Emily's and Haley's house, 2 Willow Lane.

Quests

Speed-Gro is not used in any quests.

References

↑ See StardewValley.TerrainFeatures.HoeDirt::applySpeedIncreases in the game code.
↑ See SeedShop::shopStock in the game code.
↑ The change in phaseDays in HoeDirt::applySpeedIncreases is static regardless of the date of fertilizer application relative to the date of planting. This means that applying fertilizer after planting only affects the current stage and any stages thereafter, in the same way that applying at the same day as planting affects those stages.

History

1.4: Speed-Gro now has an effect if used after planting a seed. Can now be used in Tailoring.
1.6: Now requires 5 Moss instead of 1 Clam to craft.

Equipment
Artisan		Bee House • Cask • Cheese Press • Dehydrator • Fish Smoker • Keg • Loom • Mayonnaise Machine • Oil Maker • Preserves Jar
Refining		Bait Maker • Bone Mill • Charcoal Kiln • Crystalarium • Deluxe Worm Bin • Furnace • Geode Crusher • Heavy Furnace • Heavy Tapper • Lightning Rod • Mushroom Log • Ostrich Incubator • Recycling Machine • Seed Maker • Slime Egg-Press • Slime Incubator • Solar Panel • Tapper • Wood Chipper • Worm Bin
Farming	Fertilizer	Basic Fertilizer • Basic Retaining Soil • Deluxe Fertilizer • Deluxe Retaining Soil • Deluxe Speed-Gro • Hyper Speed-Gro • Quality Fertilizer • Quality Retaining Soil • Speed-Gro • Tree Fertilizer
	Sprinklers	Iridium Sprinkler • Quality Sprinkler • Sprinkler
	Other	Deluxe Scarecrow • Garden Pot • Rarecrow • Scarecrow
Fishing	Bait	Bait • Challenge Bait • Deluxe Bait • Magic Bait • Magnet • Targeted Bait • Wild Bait
	Tackle	Barbed Hook • Cork Bobber • Curiosity Lure • Dressed Spinner • Lead Bobber • Quality Bobber • Sonar Bobber • Spinner • Trap Bobber • Treasure Hunter
	Other	Crab Pot
Bombs		Bomb • Cherry Bomb • Mega Bomb
Fences		Gate • Hardwood Fence • Iron Fence • Stone Fence • Wood Fence
Storage		Big Chest • Big Stone Chest • Chest • Junimo Chest • Mini-Fridge • Stone Chest
Signs		Dark Sign • Stone Sign • Text Sign • Wood Sign
Misc		Anvil • Coffee Maker • Cookout Kit • Deconstructor • Fairy Dust • Farm Computer • Hopper • Mini-Forge • Mini-Jukebox • Mini-Shipping Bin • Sewing Machine • Staircase • Statue Of Blessings • Statue Of The Dwarf King • Telephone • Tent Kit • Tools • Workbench

[speedincrease-1] See StardewValley.TerrainFeatures.HoeDirt::applySpeedIncreases in the game code.

[unlock-2] See SeedShop::shopStock in the game code.

[speedincrease2-3] The change in phaseDays in HoeDirt::applySpeedIncreases is static regardless of the date of fertilizer application relative to the date of planting. This means that applying fertilizer after planting only affects the current stage and any stages thereafter, in the same way that applying at the same day as planting affects those stages.

[1]

[2]

[3]