Scientific Name (Genus/Species): Heliopsis helianthoides

Family: (Asteraceae)

(P) to 6′. Sun Glory. North America. Tall, sunny yellow ray and disc flowers on this late-flowering daisy. Cheerful, long-lasting masses of blooms in July and August. Sun. 3 & T3

Scientific Name (Genus/Species): Vernonia arkansana (syn. V. crinata)

Family: (Asteraceae)

P) to 5′.  A statuesque Ironweed from the Ozark region of Missouri, producing tufts of fuzzy, deep purple, rayless flowers in late summer on tall, strong stems covered in minute fine white hairs with long, lance-like leaves in large whorls.  Moist soil.  Sun/partial shade.  3 & T1 for 3 months, then T2

Scientific Name (Genus/Species): Agastache scrophulariifolia

Family: (Lamiaceae)

(P) to 5′. Purple Giant Hyssop. Native to eastern North America. Many terminal spikes of small, violet to rosy pink flowers on tall, branching stems. The coarsely toothed, lanceolate leaves are aromatic. Blooms July to September. Well-drained soil. Sun/partial shade. 4 & T2

Scientific Name (Genus/Species): Agrimonia gryposepala

Family: (Rosaceae)

(P) to 5′. Tall Agrimony. North America. Slender, erect racemes of bright yellow, five-petalled blooms open from the bottom upwards, atop upright, softly hairy plants bearing paired, coarsely toothed, chartreuse green leaves. This native of open woods and thickets makes a surprisingly attractive garden plant. A patch planted outside our greenhouses was a joy all summer. Well-drained soil. Partial shade/sun. 3 & T2

Scientific Name (Genus/Species): Aquilegia canadensis

Family: (Ranunculaceae)

(P) to 2′. Honeysuckle Columbine. A native of eastern North America. Nodding blossoms with red spurs surrounding yellow petals and yellow anthers and an extended stigma. Dark stems and delicate foliage. Late spring to early summer bloomer. Self-sows readily. Sun/partial shade. 4 & T2

Scientific Name (Genus/Species): Asclepias syriaca

Family: (Apocynaceae)

(P) to 5′. Common Milkweed. Eastern North America. The familiar pale pink flowering version of the butterfly-luring milkweed. The ribbed, hairy pods are attractive, rattle in the wind and resemble Okra pods. Essential host plant for Monarch caterpillars. Vigorously spreading roots to the point of being invasive but a “must have” for any wild garden. Blooms June to August. Sun. 4 & T1

Scientific Name (Genus/Species): Asclepias tuberosa

Family: (Apocynaceae)

(P) to 2-½’.  Butterfly Flower.  East and Southeast US.  Numerous, small, starry, luscious orange flowers in flat-topped axillary cymes.  We are trying to establish it in an undisturbed part of the Car Park.  Like all species of Asclepias, A. tuberosa is one of the larval hosts plants for the Monarch Butterfly.  Prefers drier, well-drained soil.  Blooms June to August.  Sun.  4 & T1

Scientific Name (Genus/Species): Aster divaricatus (syn. Eurybia divaricata)

Family: (Asteraceae)

(P) to 2′. White Wood Aster. An American native. Clusters of white ray flowers with yellow centres and heart-shaped leaves on dark stems. Very floriferous. Sun, tolerates dry shade. 3 & 6 & Δ

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): Coreopsis tripteris

Family: (Asteraceae)

(P) to 6′. Tickseed. A native of eastern North America. Numerous, small, yellow daisies with a hint of purple in the centres, and fine lanceolate leaflets create a soft, billowy texture. A fine addition to the flower garden, meadow, or edge of woodland. Late summer bloom. Sun. 3 & T2