Scientific Name (Genus/Species): Eupatorium hyssopifolium

Family: (Asteraceae)

(P) to 3′.  Hyssop-leaf Thoroughwort.  A plant of sandy soils and coastal areas from New England to Florida.  Large, flat-topped inflorescences of white flowers up to one foot across.  Fine textured foliage of narrow, whorled, grey-green leaves.  Easy and a good late summer bloomer.  Well-drained soil.  Sun.  4 & T2

Scientific Name (Genus/Species): Eryngium yuccifolium

Family: (Apiaceae)

(P) to 4′.  The Rattlesnake-Master of North America.  Greenish, prickly, thistle-like flowers on a towering branched stalk.  Broad, blade-like, blue-grey serrated leaves form large striking rosettes.  Well-drained soil.  Sun.  3 & 6 & Δ

Scientific Name (Genus/Species): Pycnanthemum pilosum

Family: (Lamiaceae)

(P) to 3′.  Hairy Mountain Mint.  Eastern and Central US.  This herbaceous perennial branches frequently to create a slender bushy appearance with flowers appearing in both terminal and axillary clusters.  The stems are light green, 4-angled, densely pubescent on all sides (giving an overall grey appearance), and very aromatic when bruised.  The upper stems terminate in branching flowerheads that are flat-topped, spanning up to one inch across.  The typical mint-like flowers are hooded and lipped with purple specks and dots scattered across its throat and the lobes of its lips.  The nectar-rich flowers are very attractive to many native pollinators.  A good candidate for the white garden.  Sun.  4 & T2

Scientific Name (Genus/Species): Deschampsia cespitosa

Family: (Poaceae)

(P) to 3′.  Tufted Hair Grass.  North America.  This semi-evergreen grass forms a dense clump of narrow, dark green leaves up to 18 inches long.  In early summer, finely textured, arching flower stalks rise to 3 feet.  Spikelets (flower clusters) are single at the tips of slender branchlets with hair-like awns and are greenish-silver to purple-tinged.  As the season progresses the spikelets bleach to tawny and remain attractive, persisting well into winter.  Bonus:  Larval food plant for several butterflies in North America including the Umber Skipper.  Sun/partial shade.  4 & T1

Scientific Name (Genus/Species): Clematis serratifolia

Family: (Ranunculaceae)

Hardy vine to 9′.  Korean Clematis.  A graceful Clematis with ovate to lanceolate, serrated leaves that sets forth a succession of soft yellow, nodding bells with violet stamens.  The flowers have a delicate lemon scent and bloom from August to October.  An added delight is the fluffy, white, snowball seed heads that cover the plant until winter. A stunning beauty for the late summer garden.  Sun/partial shade.  3 & 7 for 8 weeks, then T2

Scientific Name (Genus/Species): Aethionema schistosum

Family: (Brassicaceae)

(P) to 6″.  Turkish Stone Cress.  Turkey and Lebanon.  Erect, woody stems with narrow, blue-green foliage produce rounded heads of rosy lilac, four-petalled flowers in early summer.  Interesting multi-coloured, flat seed capsules follow and persist.  A welcome self-sower.  Sun.  3 & T1

Scientific Name (Genus/Species): Dianthus knappii

Family: (Caryophyllaceae)

(B/P) to 16″.  A unique, yellow flowered Dianthus native to scrubby hillsides and dry, grassy meadows in the Western Balkans.  Dense, terminal clusters of soft lemon yellow flowers on slender, nodding stems.  Loose, grassy clumps of narrow, pale green foliage.  A short-lived perennial that often dies after blooming, best treated as biennial.  Blooms in midsummer.  Well-drained soil.  Sun/partial shade.  4 & T2

Scientific Name (Genus/Species): Papaver atlanticum

Family: (Papaveraceae)

(P) to 2′.  Moroccan Poppy.  Soft orange, two-inch, single, tissue paper blooms with yellow anthers are followed by club-shaped pods.  Pale green, silken, jagged basal leaves.  Self-sows beautifully.  Sun.  4, D & T2

Scientific Name (Genus/Species): Crambe maritima

Family: (Brassicaceae)

(P) to 2′.  Sea Kale.  Coastal North Europe, Baltic and Black Seas.  Often grown as a vegetable, however, we like it in the mixed border.  The early emerging foliage is flushed deep purple; this is the edible stage.  The unfurled leaves are wide, wavy, lobed, and glaucous providing an attractive foil  for the large panicles of honey-scented, white, four-petalled flowers.  Long summer bloomer.  Well-drained soil.  Sun.  3 & T2

Scientific Name (Genus/Species): Tanacetum niveum

Family: (Asteraceae)

(TP) to 2-½’.  Silver Tansy.  A short-lived perennial with silver-grey, deeply cut, fragrant foliage that is covered with masses of ½ inch, white, daisy-like flowers with yellow centres.  Midsummer.  Delicate yet striking.  Sun.  4 & T2