What seven years in the same soil does to a plant
By Tyler Rumi
We built our soil beds in 2019, and we've grown in them ever since. Same soil, indoors and out, amended between crops but never replaced. Seven years in, I can tell you the soil now does things it couldn't when we started — and the plants show it.
Soil isn't a backdrop, it's a system
The thing most people miss about soil is that it's alive, and the living part is what feeds the plant. Underneath the dirt there's a whole network — fungi, bacteria, microorganisms, the mycorrhizae that hook into the roots and trade nutrients with the plant. That network is the actual engine. The soil is just where it lives.
When you grow in a fresh bag of substrate each cycle, that network has to start from close to zero every time. It builds a bit over one crop, then gets thrown out. You never get past the early stage. When you leave the soil in place and feed it instead, the network keeps building, season after season.
What changes over the years
The shift is gradual, but it's real. Early on, our soil behaved like good soil — it grew good plants. Over the years, it's become something more than that. It holds water better now, so it's more forgiving through a dry stretch. It holds onto nutrients instead of letting them wash through, so the plants feed more steadily. The biology is dense enough that it breaks down the amendments we add faster and more completely.
A lot of problems other growers solve by adding more inputs, our soil just handles on its own now, because the system is mature enough to do the work.
I didn't fully believe this when we started. You hear people talk about soil "getting better" and it sounds like farm romance, but you watch the same beds over seven years and it's just true: The older the soil gets, the less it needs from us, and the better the plants come off it.
Where it shows up in the flower
It matters to anyone who isn't a soil nerd: It ends up in the plant.
Gluerangutan is the clearest example. It's grown outdoor-only in our oldest living soil, and it carries the highest terpene load in our whole lineup — 3.6 to 4.8% total. I don't think that's a coincidence. A plant fed steadily by a mature soil ecosystem, in real sunlight, expresses more of what it's genetically capable of. The soil isn't the only factor (genetics and the season matter, too) but it's a big one, and one you can only get by leaving the soil alone for years.
The honest part
This isn't the easy way to grow, and I won't pretend it is. Living soil is slower and less predictable than a controlled feed, and it took years to get our beds where they are. You can't buy your way to seven-year-old soil, you have to put in the seven years. If you need tight control and consistency crop to crop, there are easier methods, and it’s not wrong to use them.
Unfortunately, you can't shortcut what time does to living soil. That's the part we're proud of, and it's the part nobody can copy without putting in the same years we did.
Tyler Rumi is co-founder and cultivation lead at GOOD BUDS, Canada's first licensed outdoor cannabis producer. He has grown cannabis in living soil on Salt Spring Island, BC since 2017.