The Iran war is increasing prices for American farmers, pushing them to higher costs for fertilizer and energy, on top of last year's tariffs. The increasing pressure on agriculture could lead to even bigger price tags at the grocery store. The war has effectively blocked the Strait of Hormuz, a major hub for global fertilizer supply. While most fertilizer used on US farms is made in North America, the rising cost of natural gas means American-made fertilizer will also increase. The price for imported urea, a crystallized form of nitrogen, has risen by a third since the US and Israel attacked Iran. The cost of nitrogenous fertilizer shot up by 22% from February 2025 to February 2026, according to the Bureau of Labor Statistics. The strain on farmers could increase grocery costs, a significant source of stress for millions of Americans.