Quality Fertilizer

Quality Fertilizer
Improves soil quality, increasing your chance to grow quality crops. Mix into tilled soil.
Information
Source	Pierre's from year 2 • Crafting • Bone Mill
Sell Price	data-sort-value="10">10g
Recipe
Recipe Source(s)	Farming Level 9
Ingredients	Sap (2) Any Fish (1)

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|keywords=Stardew Valley Wiki, Stardew Valley, Quality Fertilizer, gift |site_name=Stardew Valley Wiki |type=article |title=Quality Fertilizer - Stardew Valley Wiki }} Quality Fertilizer is a Fertilizer that improves the chance to grow a quality crop. It can be crafted, obtained from a Bone Mill, or purchased for data-sort-value="150">150g from Pierre's General Store beginning in year 2. It may also occasionally be sold by the Traveling Cart (in any year) for data-sort-value="10"100–1,000g. Thirty Quality Fertilizer are the reward for completing the 5,000 Bundle in the Vault.

Quality Fertilizer must be placed on tilled soil before a seed has sprouted.

Quality Fertilizer only affects the basic harvest, which means that extra crops gained at harvest (Potatoes, Blueberries, Cranberries, etc.) will be of regular quality.

Chance for Quality Crops

Farming level	% Regular quality	% Silver quality	% Gold quality	Average price
0	78%	14%	8%	1.07
1	64%	23%	13%	1.12
2	52%	30%	18%	1.17
3	40%	36%	24%	1.21
4	30%	41%	29%	1.25
5	21%	45%	34%	1.28
6	15%	45%	40%	1.31
7	14%	41%	45%	1.33
8	13%	37%	50%	1.34
9	11%	33%	56%	1.36
10	10%	29%	61%	1.38
11	9%	25%	66%	1.39
12	7%	21%	72%	1.41
13	6%	17%	77%	1.43
14	4%	13%	82%	1.44

When to turn your fish into Quality Fertilizer

Below are quick-reference tables showing when to turn your fish into Quality Fertilizer, based on the quality of the fish.

(The tables consider fish whose sell price is exactly 150g to be not good to turn into Quality Fertilizer, since the addition of the sell price of 2 sap (4g) makes it technically better to purchase Quality Fertilizer.)

Fishing Pole Fish

Fish	No Profession	Fisher	Angler
Albacore	Regular, Silver, Gold	Regular, Silver, Gold	Regular, Silver
Anchovy	Always	Always	Always
Bream	Always	Always	Always
Bullhead	Regular, Silver, Gold	Regular, Silver, Gold	Regular, Silver
Carp	Always	Always	Always
Chub	Always	Always	Regular, Silver, Gold
Dorado	Regular, Silver	Regular	Never
Eel	Regular, Silver, Gold	Regular, Silver	Regular
Flounder	Regular, Silver	Regular	Never
Ghostfish	Always	Always	Always
Halibut	Regular, Silver, Gold	Regular, Silver	Regular
Herring	Always	Always	Always
Largemouth Bass	Regular, Silver	Regular	Never
Lingcod	Regular	Never	Never
Midnight Squid	Regular, Silver	Regular	Never
Perch	Always	Always	Regular, Silver, Gold
Pike	Regular, Silver	Regular	Never
Rainbow Trout	Always	Regular, Silver, Gold	Regular, Silver, Gold
Red Mullet	Regular, Silver, Gold	Regular, Silver, Gold	Regular, Silver
Red Snapper	Always	Always	Regular, Silver, Gold
Salmon	Regular, Silver, Gold	Regular, Silver, Gold	Regular, Silver
Sandfish	Regular, Silver, Gold	Regular, Silver, Gold	Regular, Silver
Sardine	Always	Always	Always
Sea Cucumber	Regular, Silver, Gold	Regular, Silver, Gold	Regular, Silver
Shad	Always	Regular, Silver, Gold	Regular, Silver, Gold
Slimejack	Regular, Silver	Regular	Never
Smallmouth Bass	Always	Always	Regular, Silver, Gold
Squid	Regular, Silver, Gold	Regular, Silver	Regular
Sunfish	Always	Always	Always
Tilapia	Regular, Silver, Gold	Regular, Silver, Gold	Regular, Silver
Tuna	Regular, Silver	Regular	Never
Walleye	Regular, Silver	Regular	Never
Woodskip	Regular, Silver, Gold	Regular, Silver, Gold	Regular, Silver

Crab Pot Fish

Fish	No Profession	Fisher	Angler
Cockle	Always	Always	Regular, Silver, Gold
Crab	Always	Always	Never
Crayfish	Always	Always	Always
Lobster	Always	Never	Never
Mussel	Always	Always	Always
Oyster	Always	Always	Always
Periwinkle	Always	Always	Always
Shrimp	Always	Always	Always
Snail	Always	Always	Always

Tailoring

Quality Fertilizer can be used in the spool of the Sewing Machine to create the dyeable High-Waisted Shirt.

Quests

Quality Fertilizer is not used in any quests.

History

• 1.05: Corrected sell price from data-sort-value="20">20g to data-sort-value="150">150g.
• 1.4: Quality Fertilizer can be applied to seeds (but can't be applied once a seed has sprouted). Can now be used in Tailoring.