The one thing that often gets overlooked by people who don’t have livestock is manure.

Before we had chickens, I remember actually paying for a truckload of poop. Now? We’ve got plenty of our own to use all over the homestead — and this simple compost tea recipe is one of my favorite ways to stretch it.

If you’ve been searching for an easy DIY organic fertilizer for seedlings, this old-school compost tea is about as simple — and frugal — as it gets.

What’s great about this method is you don’t need much manure at all. Even if you only have six chickens, you’ll have more than enough to make a batch.

I took a year off from starting seeds indoors. Last year I basically threw my garden together because I just didn’t have it in me. But this year? My husband built me a greenhouse, and now my seedlings are filling every shelf again.

And I’m back to doing things the old-school way.

So let’s get into how to make your own compost tea — the simple, tried-and-true version that won’t burn your baby plants.

(For tips on building a compost pile, you can read that post here.)

How to Make Compost Tea (Seedling-Safe Version)

This homemade liquid fertilizer costs next to nothing. Store-bought organic liquid fertilizer can run $12–$20 per bottle. This? Practically free if you already have animals.

RECIPE

Water

1 shovelful of poultry, cow, or horse manure
Use aged manure only. Fresh manure can burn seedlings. It should be composted or aged at least 6 months.

1 pillowcase or burlap bag

1 five-gallon bucket

Directions

Add your manure to an old pillowcase or burlap bag. Tie the top shut with twine.

Place the bag into your five-gallon bucket and fill with water — but don’t let the very top of the bag get soaked so you can easily remove it later.

Let it steep:

• 24–48 hours for seedling strength
• 3–4 days for stronger, established plants

When it’s ready, remove the bag and dump the contents back into your compost pile.

The liquid should look like light brown iced tea — not dark coffee. That’s the sweet spot for seedlings.

What Color Should Compost Tea Be?

This is important.

• 🌱 For seedlings → Light brown like weak iced tea
• 🌿 For established plants → Medium brown
• ❌ Too dark → Dilute immediately

If it smells very strong or looks almost black, it’s too concentrated.

Dilute for Babies

For very young seedlings (just sprouted or only first true leaves):

👉 1 part compost tea to 1–2 parts water

You want “vitamin water,” not espresso.

Compost Tea Dilution Chart

Plant Stage	Strength
Just Sprouted	1:2 dilution
True Leaves	1:1 dilution
Established Plants	Full strength

This is the section you’ll want to save.

How to Use Compost Tea

• Apply in the morning
• Water at the base of seedlings (not over the leaves)
• Use every 7–10 days
• Lightly water soil first if it’s bone dry

This works beautifully for tomatoes, peppers, cabbage, cucumbers, and squash starts.

Mistakes That Kill Seedlings With Compost Tea

Let’s avoid heartbreak here.

❌ Using fresh manure
❌ Making it too strong
❌ Not diluting for baby plants
❌ Letting it steep too long
❌ Watering stressed or wilted plants

Gentle is always better with seedlings.

When You Should Skip Compost Tea

• If seedlings are already stressed or wilting
• If your potting mix already contains rich compost
• If plants were just transplanted (wait 5–7 days)

Sometimes doing nothing is better than overdoing it.

Frequently Asked Questions

Can compost tea burn plants?

Yes — if it’s too strong or made with fresh manure.

How long does compost tea last?

Use within 5–7 days. Stir before using.

Can I use compost tea on houseplants?

Yes. Dilute 1:2 and apply lightly.

If you’re starting seeds indoors this year — especially in colder climates like here in New York — this is such an affordable way to boost growth before transplant time.

It’s old-school. It’s simple. And it works.

📌 Save this compost tea recipe so you have it when seed starting season begins.

And if you’re new to indoor seed starting, you can check out my full guide here.