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 • Mystery Box • Golden Mystery Box
Sell Price	data-sort-value="10">10g
Recipe
Recipe Source(s)	Farming Level 9
Ingredients	Sap (4) Any Fish (1)
Produces	2 Quality Fertilizer per craft

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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. 10-20 Quality Fertilizer may be received from opening a Mystery Box or Golden Mystery Box.

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 (i.e., Coffee Bean, Blueberry, Cranberries) 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 fish into Quality Fertilizer

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

(The tables consider fish whose sell price is exactly data-sort-value="300">300g to be not good to turn into Quality Fertilizer, since the addition of the sell price of 4 sap (data-sort-value="8">8g) makes it technically better to purchase Quality Fertilizer.)

Fishing Pole Fish

Fish	No Profession	Fisher	Angler
Albacore	Always	Always	Always
Anchovy	Always	Always	Always
Blue Discus	Always	Regular, Silver, Gold	Regular, Silver, Gold
Bream	Always	Always	Always
Bullhead	Always	Always	Always
Carp	Always	Always	Always
Catfish	Regular, Silver	Regular	Never
Chub	Always	Always	Always
Dorado	Always	Always	Regular, Silver, Gold
Eel	Always	Always	Always
Flounder	Always	Always	Regular, Silver, Gold
Ghostfish	Always	Always	Always
Goby	Regular, Silver, Gold	Regular, Silver, Gold	Regular, Silver
Halibut	Always	Always	Always
Herring	Always	Always	Always
Largemouth Bass	Always	Always	Regular, Silver, Gold
Lingcod	Always	Regular, Silver, Gold	Regular, Silver, Gold
Lionfish	Always	Always	Regular, Silver, Gold
Midnight Carp	Regular, Silver, Gold	Regular, Silver, Gold	Regular, Silver
Midnight Squid	Always	Always	Regular, Silver, Gold
Octopus	Regular, Silver, Gold	Regular, Silver, Gold	Regular, Silver
Perch	Always	Always	Always
Pike	Always	Always	Regular, Silver, Gold
Pufferfish	Regular, Silver	Regular	Never
Rainbow Trout	Always	Always	Always
Red Mullet	Always	Always	Always
Red Snapper	Always	Always	Always
Salmon	Always	Always	Always
Sandfish	Always	Always	Always
Sardine	Always	Always	Always
Scorpion Carp	Regular, Silver, Gold	Regular, Silver, Gold	Regular, Silver
Sea Cucumber	Always	Always	Always
Shad	Always	Always	Always
Slimejack	Always	Always	Regular, Silver, Gold
Smallmouth Bass	Always	Always	Always
Squid	Always	Always	Always
Spook Fish	Regular, Silver	Regular	Never
Stingray	Regular, Silver, Gold	Regular, Silver	Regular
Sturgeon	Regular, Silver	Regular	Never
Sunfish	Always	Always	Always
Super Cucumber	Regular	Never	Never
Tiger Trout	Regular, Silver, Gold	Regular, Silver, Gold	Regular, Silver
Tilapia	Always	Always	Always
Tuna	Always	Always	Regular, Silver, Gold
Void Salmon	Regular, Silver, Gold	Regular, Silver, Gold	Regular, Silver
Walleye	Always	Always	Regular, Silver, Gold
Woodskip	Always	Always	Always

Crab Pot Fish

Fish	No Profession	Fisher	Angler
Clam	Always	Always	Always
Cockle	Always	Always	Always
Crab	Always	Always	Always
Crayfish	Always	Always	Always
Lobster	Always	Always	Always
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. 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

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.
• 1.6: Quality Fertilizer now requires 4 sap instead of 2, but produces 2 per craft (still only requires 1 fish). Fixed quality fertilizer showing a green tile on sprouted crops, even though it can’t be placed there. Added as possible prize from Mystery Boxes and Golden Mystery Boxes.