In 1910, Zemurray bought 5,000 acres (20 km²) of land along the Cuyamel River in Honduras, near the town of Omoa. He then continued to borrow money and buy more lowland forest land in Honduras, well-suited for growing bananas. He developed this land by adding plantations, railroads, and bridges. The work was done largely by Jamaican workers, but Zemurray also liked to participate in the physical labor of the fields. At this point, Hubbard believed that Cuyamel Fruit Company's debts had grown too large, and Zemurray bought his share of the business.
Zemurray had increased the efficiency of his business through bribery and special deals with the Honduran government. But in 1910, the government of Honduras was working to reschedule their sovereign debt owed to the United Kingdom. United States Secretary of State Philander C. Knox facilitated the negotiations, which would place agents of bankers J.P. Morgan and Company in the country's customs offices to collect the taxes needed to repay the debt. Zemurray feared that the enforcement of these taxes would ruin his business, and he lobbied Knox to make the deal more favorable to him.