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): Euthamia graminifolia (syn. Solidago graminifolia)

Family: (Asteraceae)

(P) to 3.5′. Lance-leaved Goldenrod. North America. Upright, slender branching stems with many thin, grass-like, pointed leaves topped by irregular, loose, flattish cymes of small, golden yellow flowers in late summer. Its tendency to form attractive, airy clumps and prolonged season of bloom makes it an attractive addition to the garden. Well-drained soil. Sun. 3 & T2

Scientific Name (Genus/Species): Eupatorium perfoliatum

Family: (Asteraceae)

(P) to 4.5′. Boneset. A southeastern American native with striking leaf and stem structure. As if it were a fencing foil, the stem pierces through long, pointed, opposing, rough, bristly leaves. Clusters of cream-coloured flowers are held up on corymbs. September. Moist soil. Sun/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

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): 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): 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): 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): 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): 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