"This is a case for the true American garden," he said.
Until the last decade or so, they were almost unknown in 20th-century American gardens.
They are often planted in American gardens to attract these birds.
The grounds is also notable for its pre-1840 American formal garden, of which there are very few surviving.
A woodland plant with white flowers, it is rarely used in American gardens.
He also had the cottage demolished and replaced by an American garden.
Some of the most exquisite plant varieties in American gardens were introduced here.
It's a coming of age for the American garden.
"And still your father came here determined to plant his American garden in the Congo."
Thus the plant is popular in European and American gardens.