Speed-Gro: Crafting, Bundles, and More

Have you reached Farming Level 3 in Stardew Valley? You can now hasten the growth of your crops by making a Speed-Gro. In this guide, you’ll learn its uses, perks, and more!

A Speed-Gro fertilizer in the middle of cultivated crops in Stardew Valley.
Here’s what a Speed-Gro looks like in Stardew Valley.

Playing Stardew Valley can be a test of patience, especially when you’re producing crops on your farm. If you’re a beginner and looking for a way to slightly quicken your plants’ growth,  then Speed-Gro fertilizers got you. This guide will help you learn everything about it!

What’s a Speed-Gro?

A Speed-Gro is a fertilizer that makes crops grow 10% faster than their average speed. And it turns into 20% once you get the Agriculturist Profession

You can apply it before or after planting the seed on the tilled soil. But it still works if you use it at any plant’s growth stage.

However, note that it doesn’t accelerate the maturity of multi-harvest crops.

Where to Get it?

A player standing inf front of Pierre's General Store in Stardew Valley.
Visiting Pierre’s General Store.

There are different ways to get this item. You can visit Pierre’s General Store and purchase it for 100g from Spring 15 Year 1 onwards. While using a Bone Mill is also an option. But you have to wait for five pieces of it to appear randomly.

Additionally, you’ll get 20 of them as a reward in the Spring Crops Bundle in the Pantry. But if you want to save some time and gold, you can craft it yourself. You’ll receive its recipe once you reach Farming Level 3.

How to Craft it?

All you need is Pine Tar and a Clam to make it. You’ll get the first ingredient from a Tapped Pine Tree, and it’ll take five to six days to produce its sap. While you’ll find the latter by foraging in The Beach or by using Crab Pots in the Ocean.

Creating this fertilizer with these items give you five Speed-Gros.

Crafting Vs. Buying

Perhaps you’re contemplating whether you should just buy some instead of spending time scavenging for its ingredients. Before you pay Pierre 500 gold for five pieces of this fertilizer, look at the computed prices first of its required items.

Here’s the price list of Clam and Pine Tar:

Clam QualityPricePine Tar
Silver62gWith Tapper Profession (adds +25% to sell price)
Iridium 100g

If you used any Clam Quality and Pine Tar with/without a Tapper Profession, the estimated prices of the fertilizers:

Without Profession but with Clam QualityPricesWIth Profession and Clam QualityPrices

In short, producing them costs only 150g to 225g, and you’ll get to save 350g to 275g since they’re worth less than the price of Pierre’s item.


It doesn’t make a great gift since all NPCs dislike it.


A player wearing a high-wasidted shirt in Stardew Valley.
A modest High-Waisted Shirt in Stardew Valley.

You can make a High-Waisted Shirt with it and some Orange dyes for your pots.

Bundles and Quests

You can’t use it in completing bundles and quests in Stardew Valley.

Meet the author

Video Games aren't exactly my thing, but upon discovering Stardew Valley, I learned to enjoy it. It's a really simple yet exciting game that everyone should try to kill time.

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