The Best Fertilizer I Ever Used Was a Bucket of Fish

I’ve got over a decade of experience growing cannabis — indoor, outdoor, trial-and-error, learn-it-the-hard-way experience. I’ve used the expensive stuff. The fancy bottles. The “trust us, bro” nutrients with names like Tiger Bloom and Big This and Mega That. Back in the day, Fox Farm was king, and I ran their whole lineup like a proud little scientist.

But here’s the truth nobody in a hydro shop ever told me:

The best fertilizer I ever used in my entire life didn’t come in a bottle.

It came in a bucket.

And it smelled like regret.

This story goes all the way back to the 1990s — high school me, no grow books, no YouTube, no forums, no idea what I was doing. Just curiosity, time, and questionable decision-making.

One afternoon I was fishing the pond behind my house and caught about half a bucket of sunfish. I planned to bring them home and fillet them… until I realized that was a lot of work for not a lot of meat. Motivation gone.

On the walk back, I remembered a fenced-in, overgrown wooded area where I had already been thinking about growing my first weed plant. So I did what any teenage genius would do: I went home, grabbed a shovel, and headed back with the bucket of fish.

I picked a spot.
I dug a hole.
And I dumped roughly 30 whole sunfish — not gutted, not cleaned, not even apologized to — straight into the ground.

Then I buried them.

That was it.

No potting soil.
No amendments.
No nutrients.
No plan.

This was late October, maybe even November. I didn’t touch that spot again all winter.

Fast forward to spring.

I go back out to plant seeds and immediately realize I don’t even need to remember where I buried the fish — because the spot was glowing like radioactive turf. The grass there was aggressively green. Healthier. Taller. Brighter than everything around it.

Nature left me a Post-it note.

I planted seeds right on top of that spot and didn’t do a damn thing else the entire season. No feeding schedule. No pH testing. No “week three veg boost.” Nothing.

That plant grew over eight feet tall.

Now, I’ll be honest — one of them turned out to be male, so yeah, everything got fertilized and seeded up like crazy. I wouldn’t call it a championship-winning grow.

But for the first cannabis plant I ever grew in my life, with zero knowledge?

That was a success.

A messy, smelly, fish-powered success.

The wild part is, someone told me about this method beforehand. I don’t remember his name, but he was a Mexican dude from Stillwater I worked with back then. He grew outdoors near the Schuylerville battlefield. One day he looks at me and says, “You put sunfish in the ground.” Then he raised his hand way over his head and said, “Plants grow like this.”

He wasn’t lying.

Now, do I still use this method today? No.
Would I recommend burying 30 whole fish in your backyard if you live in a subdivision? Also no — unless you hate your neighbors.

But if you’ve got land, a pond or lake nearby, and patience? This method works. And the best part?

It’s basically free.

Compared to the price of fertilizers these days — which I’m sure cost about the same as groceries, rent, and your sanity — this costs nothing. Especially if you already fish. You could even eat the fillets and bury the scraps.

My advice if anyone ever tries this: do it in the fall. Bury the fish where you plan to grow and let winter do the work. Give the soil six months to break everything down and turn it into rich, living dirt before you plant anything.

No bottle ever impressed me the way that fish-fed soil did.

Sometimes the best grow advice doesn’t come from a label or a feed chart — it comes from a dude at work, a shovel, and a bucket of sunfish.

And if you know, you know.