Building a Resilient Food System in an Era of Volatile Fertilizer Prices

If you've been paying attention to agricultural news this spring, you may have noticed that nitrogen-based fertilizer prices surged in March and April. When the Strait of Hormuz closed, several of the world's top suppliers were cut off overnight. Demand outweighed supply, the remaining companies jacked up their prices, and suddenly about 70% of large-scale American farmers could not afford the fertilizer they were depending on for spring.

The price has since dropped, but this dramatic spike illustrates the fragility of the supply chain and the precarious position of farmers who depend on outsourced fertilizer: one event and their whole livelihood is threatened. And for most of us, if farmers can't farm, that means that our food prices go up, too.

This brings home a principle that many have long understood intuitively: the more your growing depends on inputs sourced from the other side of the world, the more vulnerable you are to events you have no control over. 

The good news is that there are practical ways to reduce that dependence. And your garden - and community - just might become healthier in the process.

Feed Your Soil, and It Will Feed You

The most direct way to reduce your reliance on synthetic fertilizer — especially nitrogen — is to build soil that generates its own. Compost and well-aged, CAREFULLY vetted manure (no herbicides!) are the obvious starting points. They release nutrients slowly, improve soil structure, and support the microbial communities that make nutrients available to your plants in the first place. A garden that receives compost regularly becomes more self-sufficient over time, not less.

Another powerful tool is legumes. Beans, peas, clover, and their relatives form partnerships with soil bacteria called rhizobia, which colonize the plant's roots and convert atmospheric nitrogen — which makes up about 78% of the air we breathe but isn't directly usable by most plants — into a form plants can absorb. Legume nitrogen fixation can range from 25 to 75 pounds of nitrogen per acre per year in a natural ecosystem, and several hundred pounds in a cropping system.

Not all legumes fix nitrogen equally. Peanuts, cowpeas, soybeans, and fava beans are good nitrogen fixers and will fix all of their nitrogen needs other than that absorbed from the soil.

Common beans are less efficient at fixation, but even beans on the lower end still benefit from nodulation, which helps the plant use available nitrogen more efficiently — and of course, they also feed you. Beyond nitrogen fixation, legumes also aid in solubilizing phosphorus in the soil, increasing soil microbial activity, restoring organic matter, and suppressing weeds.

The key habit to build is leaving legume roots in the soil when you're done harvesting rather than pulling the whole plant. The nitrogen stored in those root nodules becomes available to whatever you plant next.

Grow What's Already Adapted

This is also a good moment to think about the crops you're growing and whether they're suited to your conditions. Plants that thrive in your climate and soil with minimal intervention are inherently lower-input — they don't need as much fertilization or water to perform well.

In the American Southwest, beans aren't a new experiment: they've been cultivated there for around 8,000 years, and many traditional varieties — including Ancestral Puebloan beans — are the direct descendants of those early plantings. They are adapted to heat, drought, and the soils of the region in ways that modern commercial varieties often aren't.

Growing them is also a way of participating in something much older than industrial agriculture.

Build Local Networks

Individual garden resilience matters, but so does community. It doesn't need to be formal to be effective. Trading seeds for a jar of honey, splitting a bulk compost order, or helping a neighbor fix a shed in return for eggs are the building blocks of something more durable than what any individual garden can provide on its own.

The volatility in fertilizer markets is a global problem, and no home garden is going to solve it. But tending your soil, choosing adapted varieties, and trading with neighbors are steps that move you in a direction of greater independence from supply chains that are, as recent months have demonstrated, less stable than desired.