Photo by Natalia Esina.Last November, we reported on the United States National Arboretum‘s azalea problem: Azalea Hill, one of the most breathtaking collections of the plants in the world, was in danger of being destroyed after a private trust that paid for its maintenance dried up. But there’s good news today: thanks to a private $1 million donation to the Friends of the National Arboretum (FONA), the azaleas should stay in place for years to come.