Fertilizer
- See also: Crop Growth Calendars
Fertilizer is used to support crop growth and assist in farming. Some fertilizer is used by placing it on tilled soil before placing the respective seeds; other fertilizer can be used after planting a seed, as well as during plant growth. Fertilizer affects all crops, including crops grown from Wild Seeds.
All fertilizer can be crafted, once the required level of Farming skill is reached. Fertilizer can also be purchased at Pierre's General Store year-round, or at The Oasis on specific days of the week.
Fertilizer remains in the soil all season. When the season changes, fertilizer normally disappears. However, there are two exceptions in which fertilizer will remain in the soil:
- If a multi-season crop (i.e., Ancient Fruit, Coffee Bean, Corn, Sunflower, or Wheat) is planted in the fertilized tile, and the new season is one in which the crop grows, the fertilizer will remain.
- Any crop planted in the greenhouse before its normal growing season will retain its fertilizer if the new season is one in which it normally grows.
Removing a crop with a Tool like the Pickaxe does not remove the fertilizer. Only one type of fertilizer may be used per soil tile.
Types of Fertilizer
| Image | Name | Description | When to Use | Pierre's | Oasis | Sell Price | Ingredients | # Produced per Craft | Recipe Source |
|---|---|---|---|---|---|---|---|---|---|
 |
Basic Fertilizer | Improves soil quality a little, increasing your chance to grow quality crops. Mix into tilled soil. | Before planting |  100g
|
2g
|
 Sap (2)
|
1 |  Farming Level 1
| |
 |
Quality Fertilizer | Improves soil quality, increasing your chance to grow quality crops. Mix into tilled soil. | Before planting | 150g
|
10g
|
Sap (2) Fish (1)
|
1 | Farming Level 9
| |
 |
Basic Retaining Soil | This soil has a chance of staying watered overnight. Mix into tilled soil. | Before or after planting | 100g
|
4g
|
 Stone (2)
|
1 | Farming Level 4
| |
 |
Quality Retaining Soil | This soil has a good chance of staying watered overnight. Mix into tilled soil. | Before or after planting | 150g
|
200g (Saturday only)
|
5g
|
Stone (3) Clay (1)
|
2 | Farming Level 7
|
 |
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. | Before or after planting (see Bug note below) | 100g
|
20g
|
 Pine Tar (1) Clam (1)
|
5 | Farming Level 3
| |
 |
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. | Before or after planting (see Bug note below) | 150g
|
80g (Thursday only)
|
40g
|
 Oak Resin (1) Coral (1)
|
5 | Farming Level 8
|
Crop Quality Ratios
Normal soil
| Farming level | % Regular quality | % Silver quality | % Gold quality |
|---|---|---|---|
| 0 | 97% | 2% | 1% |
| 1 | 91% | 6% | 3% |
| 2 | 86% | 10% | 5% |
| 3 | 80% | 13% | 7% |
| 4 | 75% | 16% | 9% |
| 5 | 69% | 20% | 11% |
| 6 | 64% | 23% | 13% |
| 7 | 60% | 26% | 15% |
| 8 | 55% | 28% | 17% |
| 9 | 50% | 31% | 19% |
| 10 | 46% | 33% | 21% |
Soil with basic fertilizer
| Farming level | % Regular quality | % Silver quality | % Gold quality |
|---|---|---|---|
| 0 | 87% | 9% | 4% |
| 1 | 77% | 15% | 8% |
| 2 | 68% | 20% | 12% |
| 3 | 59% | 26% | 15% |
| 4 | 50% | 31% | 19% |
| 5 | 42% | 35% | 23% |
| 6 | 35% | 39% | 26% |
| 7 | 28% | 42% | 30% |
| 8 | 22% | 44% | 34% |
| 9 | 16% | 47% | 37% |
| 10 | 15% | 44% | 41% |
Soil with quality fertilizer
| Farming level | % Regular quality | % Silver quality | % Gold quality |
|---|---|---|---|
| 0 | 78% | 14% | 8% |
| 1 | 64% | 23% | 13% |
| 2 | 52% | 30% | 18% |
| 3 | 40% | 36% | 24% |
| 4 | 30% | 41% | 29% |
| 5 | 20% | 46% | 34% |
| 6 | 15% | 45% | 40% |
| 7 | 14% | 41% | 45% |
| 8 | 12% | 38% | 50% |
| 9 | 11% | 33% | 56% |
| 10 | 10% | 29% | 61% |
Appearance
Once used on tilled soil, each type of fertilizer has a unique appearance, allowing you to see what type of fertilizer has been used on a given tile.
| Name | Unwatered | Watered |
|---|---|---|
| Basic Fertilizer |
|
|
| Quality Fertilizer |
|
|
| Basic Retaining Soil |
|
|
| Quality Retaining Soil |
|
|
| Speed-Gro |
|
|
| Deluxe Speed-Gro |
|
|
Tips
Crafting Fertilizer is almost always cheaper than purchasing it. Each time you craft Speed-Gro or Deluxe Speed-Gro, you receive 5 fertilizers, though the "5" does not show up on the crafting menu until you have the required ingredients in inventory.
The table below shows the cost benefit of crafting Speed-Gro or Deluxe Speed-Gro rather than purchasing it. The table assumes that Clam and Coral are of normal quality.
| Image | Name | Ingredient Sell Price | Price | Savings |
|---|---|---|---|---|
|
|
Speed-Gro x 5 | Pine Tar ( 100g) Clam ( 50g)
Total Sell Value = 150g |
Pierre's 100g (5 packs = 500g)
|
350g
|
|
|
Deluxe Speed-Gro x 5 | Oak Resin ( 150g) Coral ( 80g)
Total Sell Value = 230g |
Pierre's 150g (5 packs = 750g)
Oasis |
520g
|
Bug
As of PC v1.2.33, applying Speed-Gro or Deluxe Speed-Gro to a crop after planting has no effect on crop growth, even if applied immediately after planting a seed.