Fertilizer

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Fertilizer is used to produce different effects to support crop growth and improve farming in general (see table below). All fertilizer is used by placing it on tilled soil BEFORE placing the respective seeds. Fertilizer remains in the soil all season. When the season changes fertilizer normally disappears, however if a cross-season crop like Corn is fertilized the fertilizer will remain in the soil and continue to provide benefits. Removing a crop using the pickaxe does not remove the fertilizer. Fertilizers cannot be stacked (only one type may be used per soil tile). Fertilizer in the greenhouse will disappear after one season, even with crops that are normally cross-season like Corn.

Types of Fertilizer

Image Name Description Pierre's Oasis Sell Price Crafting Farming Lvl.
Basic Fertilizer.png Basic Fertilizer Improves soil quality a little, increasing your chance to grow quality crops. Mix into tilled soil. (~33% Regular / ~33% Silver / ~33% Gold) Coin Icon100g Coin Icon2g Sap.png Sap (2) Lvl. 1
Quality Fertilizer.png Quality Fertilizer Improves soil quality, increasing your chance to grow quality crops. Mix into tilled soil. (~10% Regular / ~30% Silver / ~60% Gold) Coin Icon150g Coin Icon10g Sap.png Sap (2)Fish.png Fish Lvl. 9
Basic Retaining Soil.png Basic Retaining Soil This soil has a chance of staying watered overnight. Mix into tilled soil. Coin Icon100g Coin Icon4g Stone.png Stone (2) Lvl. 4
Quality Retaining Soil.png Quality Retaining Soil This soil has a good chance of staying watered overnight. Mix into tilled soil. Coin Icon150g Coin Icon200g Coin Icon5g Stone.png Stone (3)Clay.png Clay (1) Lvl. 7
Speed-Gro.png Speed-Gro Stimulates leaf production. Guaranteed to increase growth rate by at least 10%. Mix into tilled soil. Does not reduce time between harvests for multi-harvest crops. Coin Icon100g Coin Icon20g Pine Tar.png Pine Tar (1)Clam.png Clam (1)

(Each craft produces 5 Speed-Gro)

Lvl. 3
Deluxe Speed-Gro.png Deluxe Speed-Gro Stimulates leaf production. Guaranteed to increase growth rate by at least 25%. Mix into tilled soil. Does not reduce time between harvests for multi-harvest crops. Coin Icon150g Coin Icon80g Coin Icon40g Oak Resin.png Oak Resin (1)Coral.png Coral (1)

(Each craft produces 5 Deluxe Speed-Gro)

Lvl. 8

Notes

Tips

Crafting Fertilizers is always a better option than buying them, and will save you a lot of money throughout the course of the game.

Sap is very easy to come by (from cutting Trees and killing Slime), so remember to craft Basic Fertilizer as soon as you hit Farming Level 1. It is well worth it.

When you reach Fishing Level 3, a good tip is to craft a number of Crab Pots and place them in the small lakes within your farm + a few by the ocean. Use the caught Perriwinkles, Snails, Shrimps, Mussels and Oysters (classified as Fish) to combine with Sap to make Quality Fertilizer. Easy and cheap.

The Speed-Gro and Deluxe Speed-Gro variants are also cheaper to craft than to buy (contrary to earlier suggestions on this wiki page). For each Pine Tar/Clam combo, you actually get five Speed-Gro packs (1 Pine Tar + 1 Clam = 5 Speed-Gro), which saves both money and resources. Same goes for Deluxe Speed-Gro (1 Oak Resin + 1 Coral = 5 Deluxe Speed-Gro), so get those Tappers up and running.

Image Name Cost Item Price Saving
Speed-Gro.png Speed-Gro x 5

Pine Tar.png Pine Tar (Coin Icon100g) Clam.png Clam (Coin Icon50g) TOTAL VALUE = 150g

Pierre's Coin Icon100g (5 packs = 500g)

Coin Icon350g

Deluxe Speed-Gro.png Deluxe Speed-Gro x 5

Oak Resin.png Oak Resin (Coin Icon150g) Coral.png Coral (Coin Icon80g) TOTAL VALUE = 230g

Pierre's Coin Icon150g (5 packs = 750g)

Oasis Coin Icon80g (Thursday) (5 packs = 400g)

Coin Icon520g

Coin Icon170g