Lovage (Levisticum officinale). Hardy, perennial kitchen garden herb Description: Hollow, branching stem resembles celery stalks, smooth, deep glossy-green leaves; yellow flowers in large umbels followed by pale yellowish-brown seedsHabit: Tall, robust... - Lovage (Levisticum officinale).
Maltese Cross (Lychnis chalcedonica). Hardy perennialDescription: Tight clusters of bright scarlet, cross-shaped flowers on long stalks in early summer Habit: Grows up to 3 feet high Culture: Prefers full sun and well-drained garden loam Hardiness: Cold hardy to USDA Zone 3 Ori... - Maltese Cross (Lychnis chalcedonica).
Marginal Shield Fern (Dryopteris marginalis). Hardy, North American perennialDescription: Leathery, evergreen fronds about 6 inches wide; distinctly blue-green in color Habit: Grows to 2 feet in height Culture: Prefers moist, acid, humus-rich soil and part to full shade H... - Marginal Shield Fern (Dryopteris marginalis).
Marie Pavie Rose (Rosa Polyantha Hybrid). Hardy, deciduous, flowering shrub Description: Delicate pink buds open to sweetly fragrant, semi-double, blush-white flowers in clusters throughout the season; healthy dark green foliage; thornless Habit: Compact shrub to 4 ... - Marie Pavie Rose (Rosa Polyantha Hybrid).
May Apple (Podophyllum peltatum). Hardy, shade-loving, North American perennialDescription: Distinctive round shield-like leaves unfurl in early spring; flowers are nodding, wax-like cups that spring from the forked stem in mature plants; yellowish, egg-shape... - May Apple (Podophyllum peltatum).
Miss Aravilla Iris (Iris x germanica cv.). Hardy, spring-flowering rhizomatous perennialDescription: Striking blend of golden standards with reddish-maroon, variegated falls and orange to deep yellow beardsHabit: Erect, clump forming plants grow 2-4 feet high and 1-2 feet wi... - Miss Aravilla Iris (Iris x germanica cv.).
Musk Geranium (Geranium macrorrhizum). Hardy, early summer-flowering perennialDescription: Bears a profusion of magenta flowers with prominent deep-pink stamens; leaves are deeply cut and fragrant Habit: Grows up to 1 A 1/2 feet high and up to 2 feet wide; spreads by thick rhizomes&... - Musk Geranium (Geranium macrorrhizum).
New England Aster (Symphyotrichum novae-angliae). Description: Hardy, North American perennial - Lavender to deep purple, daisy-like flowers in late summer to early fall Habit: Grows 3-6' high and 2-3' wide; upright, clump-forming Culture: Prefers full sun and moist but well-drain... - New England Aster (Symphyotrichum novae-angliae).
New Jersey Tea (Ceanothus americanus). Hardy, deciduous, North American shrub Description: Clusters of tiny white, fragrant flowers in late spring to early summer; medium to dark green, toothed, ovate leaves; vigorous roots are red and fix nitrogen in the soi... - New Jersey Tea (Ceanothus americanus).
New York Ironweed (Vernonia noveboracensis). Hardy, late summer to fall-blooming, North American perennialDescription: Small, fluffy, deep purple flowers in 3-4" terminal clusters on tall, erect stems; alternate, lanceolate, deep green leaves Habit: Gr... - New York Ironweed (Vernonia noveboracensis).
Nora Barlow Columbine (Aquilegia vulgaris cv.). Hardy, late spring-flowering perennial Description: Rosy pink and white double flowers; delicate, blue-green foliage forms an attractive mound Habit: Grows 2-3' tall and 1-2' wide Culture: Prefers full sun to part shade and rich, mo... - Nora Barlow Columbine (Aquilegia vulgaris cv.).
Northern Maidenhair Fern (Adiantum pedatum). Herbaceous perennial Description: Finely-textured fronds composed of many leaflets that hang like fingers from a dark, wiry-forked stalk. Habit: Grows 10 to 30" tall and up to 18" wide Culture: Prefers moist, shady woods with humus rich s... - Northern Maidenhair Fern (Adiantum pedatum).
Nutmeg-Scented Geranium (Pelargonium x fragrans). Tender perennial grown as evergreen houseplantDescription: Vigorous plant with soft gray-green, strongly aromatic, lobed foliage; small white flowers with red veins. Habit: 12-18 inches high and 12 inches wide, bushy plant. Cultur... - Nutmeg-Scented Geranium (Pelargonium x fragrans).
Oakleaf Hydrangea (Hydrangea quercifolia). Deciduous, North American shrubDescription: Pyramidal clusters of white flowers in mid-summer, changing to purplish pink and finally brown; spectacular fall color: red, orange-brown, and purple; attractive cinnamon-colored bar... - Oakleaf Hydrangea (Hydrangea quercifolia).
Obedient Plant (Physostegia virginianum). Hardy, herbaceous North American perennial Description: Rose pink flowers borne in whorls on tall stalks in late summer Habit: Clump forming plant spreads by underground rhizomes, grows 3 to 4 feet tall Culture: Prefers full sun to par... - Obedient Plant (Physostegia virginianum).
Ostrich Fern (Matteuccia struthiopteris). Description: Hardy, herbaceous North American perennial - Erect, broadly lance-shaped pale to medium green fronds Habit: Fronds grow 4-6 feet high and 3 feet wide; rhizomatous fern with vigorous habit Culture: Prefers humus-rich, mo... - Ostrich Fern (Matteuccia struthiopteris).
Pale Purple Coneflower (Echinacea pallida). Hardy, summer-flowering, North American perennial Description: Graceful, pale purple flowers with narrow, reflexed ray florets (petals) and a conical, orange-brown disk; showy flowers attract bees and butterflies; birds... - Pale Purple Coneflower (Echinacea pallida).
Pasque Flower (Pulsatilla vulgaris). Hardy, spring-flowering, herbaceous perennial Description: Bears striking deep royal purple to pale purple or rarely white flowers followed by silvery plumed seed-heads in early summer Habit: Grows to 12 inches high and wide, form... - Pasque Flower (Pulsatilla vulgaris).
Paw Paw (Asimina triloba). Description: North American large shrub or small deciduous tree - Curious, brownish-red flowers in spring and large, sweet, aromatic fruits in fall; large, tropical leaves turn yellow in fall Habit: Grows 15 to 20 feet high an... - Paw Paw (Asimina triloba).