By Andy Rosen
On a half-million acres across the United States, seeds from the Charlestown startup Indigo Agriculture have been battle-hardened against the elements, producing particularly bountiful yields of some of the nation’s most important cash crops.
Investor enthusiasm about the company has been growing just as fast, as venture capitalists have poured in hundreds of millions of dollars into Indigo Agriculture’s promising method of treating seeds with naturally occurring microbes to make crops more tolerant of stressful conditions, such as drought. On Tuesday, Indigo said it had raised $156 million — one of the largest funding rounds for a Boston company this year.