Revolution Growth is investing $22 million in Sweetgreen, an organic salad retail chain launched by three Georgetown grads in 2007 that has since expanded across the District and five states, the company announced Wednesday.

Sweetgreen is a relatively low-tech investment for Revolution Growth, a $450 million fund founded by Steve Case, Donn Davis and Ted Leonsis. Under the deal, Case will join Sweetgreen's board. The funds will go toward national growth in “key markets,” as well as building the company’s “team and corporate culture, and growing community programs and marketing initiatives,” according to a news release.