Scientific Name (Genus/Species): Campanula alliariifolia

Family: (Campanulaceae)

(P) to 2′. Ivory Bellflower. “A clump-forming plant with attractive, heart-shaped green leaves forming a base to the erect wiry stems from which shapely cream bells nod along their entire length.” (GST**). We love this plant in our Gravel Garden. Sun. 4 & T2

Scientific Name (Genus/Species): Campanula americana

Family: (Campanulaceae)

(B) to 5′.  Tall Bellflower.  North America.  A tall, distinctive Campanula producing slender racemes of ½-inch, star-shaped blooms of a gorgeous, soft periwinkle blue.  The interior is marked with a central white ring and a prominent stigma.  Flowers July to October.  Partial shade.  4 & T2

Scientific Name (Genus/Species): Campanula hofmannii (syn. Symphyandra hofmannii)

Family: (Campanulaceae)

(P) to 2′. A Bosnian native. Marvelous, creamy white, pendulous bells in terminal racemes contrast with the serrated basal leaves. Showy seedpods, too. Self-sows gently. Sun/partial shade. 4 & T2

Scientific Name (Genus/Species): Campanula latifolia Mix

Family: Campanulaceae

(P) to 5′. Great Bellflower. Europe. A mix of tall, open spikes of large, violet-blue and pure white bells adorn very upright stems. Blooms in June and July. Beautiful and reliable. Sun/partial shade. 4 & 7 for 2 weeks, then T1

Scientific Name (Genus/Species): Campanula rigidipila

Family: (Campanulaceae)

(P) to 12″.  This rare plant is the world’s most southerly occurring Campanula from Ethiopia and the Kenyan highlands.  From a clump of thick, triangular, hairy, grey-green leaves, arise strong, erect stems carrying pale buds that open to lovely, clear blue bells with flared tips edged with white hairs.  Summer-blooming.  Sun.  4 & T2

Scientific Name (Genus/Species): Campanula rotundifolia

Family: (Campanulaceae)

(P) to 18″.  Harebell.  Charming native wildflower throughout much of the northern hemisphere.  Graceful, branched stems with narrow, thread-like leaves arise from the basal rosette.  Many small, bright blue, pendulous, bell-shaped flowers abound from late spring to early summer.  Sun.  4 & T2

Scientific Name (Genus/Species): Campanula trachelium Mix

Family: (Campanulaceae)

(P) to 3.5′. Nettle-leaved Bellflower. Europe, North Africa, Siberia.  Spikes of blue-purple to lilac to white bells decorate the numerous, leafy stems. Nettle-like foliage. Blooms simultaneously with the roses, a perfect complement. Sun/partial shade. 4 & T2

Scientific Name (Genus/Species): Cardamine heptaphylla

Family: (Brassicaceae)

(P) to 15″.  Seven-leaved Toothwort.  Central and Western Europe.  This woodland charmer is characterized by the smooth, erect, unbranched stem with few but large ovate-lanceolate and irregularly toothed leaves.  The stem is topped with an inflorescence composed by a cluster of four cup-shaped, broad flowers carried by a long pedicel.  Flowers may be white, pink, or purplish with petals that are somewhat wrinkled.  Blooms from April to July.  Partial shade.  Prefer moist, humus-rich soil. 3 & T1

Scientific Name (Genus/Species): Cardiospermum halicacabum

Family: (Sapindaceae)

(A) Vine. Love-in-a-Puff. Tropical Africa, America, India. A fast-growing climber with tri-lobed, dissected foliage and small white flowers with four irregular petals. Fun, three-angled, membranous, inflated seedpods contain white seeds with a little black heart on them, hence the name. Good in pots too. Sun. 3 & T2

Scientific Name (Genus/Species): Carex muskingumensis

Family: (Cyperaceae)

(P) to 2′.  Palm Sedge.  Western North America.  A trouble-free sedge that thrives at the edge of our Rock Ledge.  Ribbed, ½-inch-wide leaf blades are pale green.  Dense seedheads are persistent and attractive.  Sun.  4 & T2

Scientific Name (Genus/Species): Caryopteris divaricata

Family: (Lamiaceae)

(P) to 5′.  Bluebeard.  A native plant of the Himalayas.  Splendid spikes of violet-blue, wide open, hooded flowers with a dab of white in the throat.  Light green leaves are ovate, acute and oddly aromatic.  An accommodating, tough plant.  Blooms in September.  Sun.  3 & T3

Scientific Name (Genus/Species): Centaurea dealbata

Family: (Asteraceae)

(P) to 3′. Persian Knapweed. Caucasus. Erect, branched, leafy stems with finely divided, grey-green, pinnatisect leaves with grey, woolly undersides. The attractive green, scaly, involucre of bracts with black bristles supports the lilac-pink, pale centred ‘bachelor’s buttons’. Blooms early to mid-summer. Sun/partial shade. Well-drained soil.  3, D & T2

This seed is either sold out or unavailable

Scientific Name (Genus/Species): Centaurea macrocephala

Family: (Asteraceae)

(P) to 3′. Great Golden Knapweed. Caucasus. A large, leafy, robust plant bearing sturdy stems topped with incredible, rich golden yellow, hemispherical, thistle-like blooms. The fringed, rusty brown coloured involucre of bracts is very prominent and persists. Midsummer. Makes excellent dried cut flowers. Sun.  3, D & T2

Scientific Name (Genus/Species): Centaurea phrygia

Family: Asteraceae

(P) to 4′.  Wig Knapweed.  Europe – meadows, field margins and open woods.  A sparsely hairy to roughly textured perennial that combines well with informal plantings of ornamental grasses.  The purplish lilac flowers have long, obliquely funnel-shaped, deeply divided, upward sweeping, outer ray florets; the central disc florets are smaller and tubular.  Leaves are alternate, short-stalked and broadly lanceolate, with a regularly toothed margin.  Sun.  3 & T2

This seed is either sold out or unavailable

Scientific Name (Genus/Species): Centaurium scilloides

Family: (Gentianaceae)

(P) to 6″ . Perennial Centaury. Europe. This charmer has neat tufts of small, dark green, pointed, glossy leaves. Erect stems carry clear pink, five-petalled flowers with prominent yellow anthers in dense clusters. Blooms late summer. Short-lived but self-sows gently. Sun/partial shade.  3 & T1 & Δ