Stack of 100 dollar billsAccording to a recent retailer survey, potash fertilizer was again in the lead for highest price for the fourth straight week. The average price of potash increased 7% in June when compared to May — that equates to a price of $476 per ton. This latest figure is 32% more expensive when compared to the same time period in 2021. Industry experts say potash has faced supply issues with increased global demand which accounts for most of the price hike. See the remaining seven competing fertilizer prices and trends.