In July, Hydrangeas (Hydrangea arborescens, H. quercifolia, H. paniculata, H. macrophylla), daylilies (Hemerocallis) and astilbes (Astilbe cultivars & Astilbe chinensis) are in full bloom in the Display, Arlene and Arthur S. Holden Jr. Butterfly, and Helen S. Layer Rhododendron gardens as well as at Lantern Court. In the rhododendron gardens enjoy the deciduous azalea hybrids (Rhododendron ‘Weston’s Lemon Drop’, ‘Pennsylvania’, ‘Framingham’,
‘July Joy’, and ‘July Jingle’). Hibiscus ‘Tosca’, a rose-of-Sharon hybrid has large lavender-pink flowers in the Display Garden. The Stokes asters (Stokesia laevis), Shasta daisies (Leucanthemum x superbum cultivars), black-eyed Susans (Rudbeckia fulgida, R. hirta), bee balm (Monarda didyma, M. fistulosa,
and hybrids), blazing-stars (Liatris spicata), and purple coneflowers (Echinacea purpurea and hybrids) are blooming in the Display, Holden Butterfly and Prairie gardens where the showy pink plumes of the Queen-of-the-Prairie (Filipendula rubra) grace the landscape. A nice patch of great coneflower (Rudbeckia maxima) is south of the Corning Visitor Center. The bottlebrush buckeyes (Aesculus parviflora and A. parviflora ‘Rogers’
along the entrance drive, Hedge Garden, and in the Butterfly Garden brightening up the landscape. The bright red flowers of royal catchfly (Silene regia) grace the north side of the Holden Butterfly Garden and the south side of the Myrtle S. Holden Wildflower Garden in July and August – hummingbirds are their pollinators. Another showy perennial that blooms a long time is garden phlox
(Phlox paniculata) a number of types in various colors can be found in the Holden Butterfly, Display, rhododendron gardens, and at Lantern Court.Check out the water-lilies (Nymphaea) in the Display Garden, Holden Butterfly Garden and at Lantern Court.
In August the large flowers of marsh and rose mallow (Hibiscus moscheutos cultivars and hybrids) are evident around the ponds in the Display, Layer Rhododendron, and Holden Butterfly gardens where water lilies (Nymphaea) are flowering. In the Holden Butterfly Garden the tall ‘Autumn Sun’ coneflowers (Rudbeckia ‘Autumn Sun’) preside over a riot of bloom including blazing stars (Liatris), butterfly bushes (Buddleia), , orange coneflower (Rudbeckia fulgida ‘Goldsturm’), and the sweetly fragrant summersweet (Clethra alnifolia). In the Prairie Garden, don’t miss the yellow flowers of prairie dock (Silphium terebinthinaceum) on their tall flower stalks and the compass plant (Silphium laciniatum), species of Silphium (sill-fee-um) that goldfinch are attracted to. In the Holden Wildflower Garden and the Holden Butterfly Garden, enjoy the bright red cardinal flowers (Lobelia cardinalis), and the cool blue lobelia (Lobelia siphilitica). In the Sally Gries Entry Beds along Sperry Road and inside the east gate of the Layer Rhododendron Garden the late panicle hydrangeas (Hydrangea paniculata ‘Tardiva’) will be in bloom by mid-to late August. Check out theorange flowers of Crocosmia ‘Emily McKenzie’, the purple flowers of lilyturf (Liriope platyphylla), the rosy-purple flowers of Allium ‘Millennium’, and the white flowers of the chaste-tree (Vitex agnus-castus ‘Silver Spire’) in the Display Garden.