Category: Rarium | Sub-Category: Perennials for Sun
Scientific Name (Genus/Species): Vernonia altissima
Family: (Asteraceae)
(P) to 8′. Tall Ironweed. Eastern North America. Loose, flattened clusters of thistle-like, purple flowers atop towering stems. Large irregularly toothed and pointed leaves. Not for the faint of heart! Blooms from late summer into autumn. Moist soil. Sun/partial shade. 3 & T1 for 3 months, then T2
Category: Rarium | Sub-Category: Alpine and Rock Garden
Scientific Name (Genus/Species): Lychnis viscaria subsp. atropurpurea
Family: (Caryophyllaceae)
(P) to 18″. Balkan’s Catchfly. This striking Catchfly has reddish purple marked leaves, purplish stems, and 10-inch panicles of deep purple, five-petalled flowers. Eye-catching. Late spring. Sun. 4 & T2
Category: Rarium | Sub-Category: Alpine and Rock Garden
Scientific Name (Genus/Species): Inula ensifolia
Family: (Asteraceae)
(P) to 18″. Swordleaf Inula. Eastern Europe. A sturdy little plant with narrow, stalkless 4″ leaves on erect branching stems carrying terminal, solitary golden yellow daisies. Very likable. Blooms mid-summer onwards. Sun. 4 & T2
Category: Rarium | Sub-Category: Alpine and Rock Garden
Scientific Name (Genus/Species): Draba hispanica
Family: (Brassicaceae)
(P) to 3″. Spain. Mounding cushion plant with tufted, dark green, needle-like leaves. Silver-grey in colour. Yellow, four-petalled flowers appear on small, three-inch flower stalks in early spring. Sun. 3 & T1
Category: Rarium | Sub-Category: Alpine and Rock Garden
Scientific Name (Genus/Species): Aquilegia flabellata var. pumila f. rosea
Family: (Ranunculaceae)
(P) to 6″. Fan Columbine. A Japanese garden treasure with short-spurred, pale pink, nodding flowers in spring. Biternate to triternate, blue-green foliage is somewhat suggestive of meadow rue. The leaflets of this species are rounded and fan-shaped, hence the common name. Adorable. Sun. 4 & T2
Category: Rarium | Sub-Category: Woodland
Scientific Name (Genus/Species): Kirengeshoma palmata Koreana Group
Family: (Hydrangeaceae)
(P) to 4′. A Korean dignitary. Large, sharply lobed, maple-like leaves in opposite pairs display a handsome silvery pubescence when emerging in spring. The foliage provides interest through late summer when the flowers emerge. Pale yellow, waxy, five-petalled flowers are borne on a stiffly upright inflorescence. Blooms a bit earlier than K. palmata. A “must-have.” Prefers partial shade. 5 & T2
Category: Rarium | Sub-Category: Woodland
Scientific Name (Genus/Species): Jeffersonia dubia
Family: (Berberidaceae)
(P) to 12″. Manchuria. Asian species of our own native Twinleaf. Large cup-shaped, blue-lavender, six-petalled flowers transform into cupped seed capsules with lids. Bright green, kidney shaped leaves are bi-lobed and rounded though not fully divided, like J. diphylla. Moist woods. April to May. Part shade/shade. 3 & T2 & Δ
Category: Rarium | Sub-Category: Woodland
Scientific Name (Genus/Species): Hosta sieboldiana var. elegans
Family: (Asparagaceae)
(P) to 3′. “…most sumptuous of all the Hostas.” (GST**). Huge, broad, glaucous, heavily textured, bluish green leaves form magnificent, stately clumps that add accent and poise to the woodland garden. Pale lilac-white flowers appear in early to midsummer, though they barely emerge from beneath the foliage. 3 & T3, then it may need 40º for 2-3 months.
Category: Rarium | Sub-Category: Woodland
Scientific Name (Genus/Species): Boehmeria platanifolia
Family: (Urticaceae)
Perennial to 3′. Asian False Nettle. China, Japan, Korea. A subtle and unique plant for the woodland garden. The large, apple-green leaves have deeply serrated edges and are covered with tiny hairs, giving the plant an overall soft glow. The opposite leaves attach to the sturdy stems with contrasting red petioles. The leaves, in orderly pairs, are aligned at 90° to the pairs above and below. Tannish-green tassel, catkin-like flowers emerge from the branch tips in August and continue to droop into the fall. Partial shade. 3 & T2
Category: Rarium | Sub-Category: Woodland
Scientific Name (Genus/Species): Aruncus aethusifolius
Family: (Rosaceae)
(P) to 12″. A miniature Goat’s Beard from Korea. Bright green, finely dissected foliage forms a thick, lacy carpet. Small, dense, branched spikes of Astilbe-like, tiny, creamy flowers appear in summer. Foliage turns a beautiful burgundy in fall. Partial shade. 4 & T1











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