The gardens contain the National Plant Collections of Lilac, Deutzia, Hosta and Hemerocallis.
Other items of horticultural interest include: holly, daylily, herb, hosta, and heather gardens, as well as more than a thousand varieties of trees, shrubs and flowers, many labeled.
One can also find traces of John Hunter’s estate garden, which held grape hyacinth, periwinkle, daylily, and Tartarian honeysuckle.
The "lily" flower buds known as jīnzhēn (金针, "golden needles") in Chinese cuisine are actually from the daylily Hemerocallis fulva.