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Browse Plants

Narrowed By:Type: Perennials+ Zone: 7+ Botanical Name: P - R
Displaying 1 - 20 of 65 listings   1 | 2 | 3 | 4View AllNext > Sort By: Sort
Pachyphragma macrophyllum Pachyphragma macrophyllum
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Rounded, ruffled leaves form a solid, weed-free, evergreen ground cover. In the spring, elongating shoots open to rounded heads of small four-petaled white flowers. Plants remain in bloom for nearly a month, opening new flowers from expanding terminal clusters as well as from numerous side shoots. Mature plants stand 12 to 18 inches high when in flower, and spread in time to form clumps 2 to 3 feet wide.

Pachysandra procumbens Pachysandra procumbens
(Allegheny spurge)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This clump-forming, semi-evergreen perennial has long prostrate stems and pewter-green foliage. Fragrant, bottlebrush-like white flowers are borne on 2- to 4-inch-long spikes in spring, as the foliage appears.

Pachysandra terminalis Pachysandra terminalis
(Japanese spurge)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This plant has leathery, evergreen dark green foliage with slightly indented margins. It reaches about 8 to 10 inches tall and bears tiny white male flowers. It spreads by rhizomes, eventually forming a mat at least 2 inches thick. Cultivars offer more compact form with smaller, finely toothed leaves ('Green Carpet') or glossy dark green leaves ('Green Sheen').

Paeonia lactiflora Paeonia lactiflora
(Common garden peony)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This stunning herbaceous woodland peony has upright red-mottled stems and dark green leaves that are elliptic or lance-shaped with rough margins. It bears usually solitary, single creamy white to pale pink blossoms that are cup-shaped and elegant. The blooms measure 3 to 4 inches across and have pale yellow stamens. Like all peonies, the flowers are with us for too short a time. They are followed by beautiful seedpods.

no image available Paeonia obovata var. alba
(Japanese forest peony)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This plant is a beautiful addition to the garden from early spring until autumn. Red shoots with a crystalline dusting emerge in early April, followed by 5-inch-long, egg-shaped leaves that mature to a dark, reddish green. Each 18-inch stem bears a 2-inch-wide, chalice-like, single pure-white flower with yellow anthers and purple filaments. Mature seedpods open to reveal metallic-blue pea-sized fertile seeds and holly-berry red unfertilized seeds.

Panicum virgatum 'Ruby Ribbons' Panicum virgatum 'Ruby Ribbons'
(Switch Grass)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Panicum Ruby Ribbons’ soft blue-green foliage emerges in the spring on upright, clumping plants. The foliage takes on a wine-red color in early summer, which intensifies as the season progresses. Flower heads appear in late summer, followed by ornamental seed heads, which, if left uncut, provide long-lasting winter interest.

Papaver nudicaule Papaver nudicaule
(Iceland poppy)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Iceland poppy is a short-lived perennial usually grown as a cool-weather annual, or biennial. From hairy tufts of linear blue-green foliage rise wiry stems bearing a pendant bud. The single (occasionally double) short-lived flowers unwrinkle their petals into a wide-spreading saucer shape 3 inches across.

Papaver orientale 'Flamenco Dancer' Papaver orientale 'Flamenco Dancer'
(Poppy)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

The 4- to 6-inch-wide blooms of 'Flamenco Dancer' poppy stand out in late spring and early summer with their true red color and fanciful fringes. It is a sport of the popular 'Turkenlouis'. After the flowers fade, this perennial will go dormant, so plant it near neighbors that will fill the vacancy.

Pardanthopsis dichotoma Pardanthopsis dichotoma
(Vesper iris)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

The flowers of vesper iris open in the late afternoon over a period of several minutes, just about the time the sound of evening vespers might have wafted over an old monastery garden. It is a valuable addition to the garden also because of its late blooming season (high summer into early fall) and for its ability to bloom from seed started the same spring. The vesper iris has typical iris-looking leaf fans and abundantly branched, willowy bloom stalks rising to 4 feet. The inch-wide flowers range in color from pure white to violet.

Parthenium integrifolium Parthenium integrifolium
(Wild quinine, American feverfew)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Wild quinine bears lustrous foliage and long-lasting white flowers throughout the season, even in heat and drought. It is native to moist prairies, low meadows, and open woods from Massachusetts and Minnesota, south to Georgia and Arkansas.

Patrinia scabiosifolia Patrinia scabiosifolia
(Patrinia)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

From a basal mound of toothed leaves (similar to scabiosa's foliage) rise 4- to 6-foot stems of tiny chrome-yellow flowers.

Penstemon 'Garnet' Penstemon 'Garnet'
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This plant is a bushy, vigorous perennial with smooth, narrow, dark green leaves and small, tubular, deep wine-red flowers borne in erect spikes, from early summer to late autumn.

Penstemon barbatus Penstemon barbatus
(Beardlip penstemon)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This erect perennial has basal rosettes and stems bearing lance-shaped mid-green leaves. The plant bears long panicles of scarlet or yellow flowers from early summer to early autumn.

Penstemon cardinalis Penstemon cardinalis
(Cardinal penstemon)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This New Mexico/Texas native offers the garden spikes of dangling, rich red flowers in midsummer that attract hummingbirds. Grow in a border, rock garden, or cottage garden. It appreciates a moist but well-drained soil, but can also take more xeric habitats.

no image available Penstemon clutei
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This upright perennial sports hanging, tubular bright-pink flowers to 1 inch across above serrated blue-green leaves. It blooms summer to fall.

no image available Penstemon cobaea
(Dew flower)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Penstemon cobaea has shiny dark green leaves and purple, pink, or white flowers on spike-like panicles in mid-spring. It grows to 2.5 feet tall. The flowers are larger than most other penstemons. Dew flower is native to the Lower Plains and the southwestern U.S.

Penstemon digitalis Penstemon digitalis
(Foxglove penstemon, Beard tongue)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This vigorous perennial bears elegant clusters of pure white flowers marked with purple or pale violet from early to late summer. Semi-evergreen basal rosettes and deciduous or semi-evergreen stems are also often marked reddish purple.

Penstemon digitalis 'Husker Red' Penstemon digitalis 'Husker Red'
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

'Husker Red' is one of the few penstemons that does well in wet winters and hot, humid summers. Ruby-toned leaves appear in spring, followed in late spring and early summer by 3-foot-high stems adorned by panicles of white blooms.  The flowers attract bees, hummingbirds, and butterflies, but the plants are not magnets for deer or rabbits. In autumn and winter, songbirds feast on the seed. For a stunning display, plant 'Husker Red' in groups. -Chris Kelley, Regional Picks: Midwest, Fine Gardening issue #120

Penstemon palmeri Penstemon palmeri
(Palmer's penstemon)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

A native of the Southwest, Palmer's penstemon sports sharp, prickly, gray leaves and thrives in the harsh conditions. Snapdragon-like pale pink flowers boom in late spring or early summer, and their sweet-honey scent attracts bumblebees. Toothed, sage green leaves skirt the upright stems for the rest of the gardening season.This perennial wildflower is one of the largest penstemons. It looks good in the back of a border or as a focal point, perhaps near a path where its fragrance can be enjoyed or in an informal grouping with other native penstemons and grasses, or with other plantss that have similar maintenance and water requirements. -Katie Nicolich, Plants to know and grow, Fine Gardening issue #120

no image available Penstemon strictus 'Bandera'
(Rocky Mountain penstemon, Stiff beard-tongue)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Rocky Mountain penstemon is an upright perennial that forms a mat of glossy green leaves from which arise straight, 2-foot-tall stems bearing rich purple blooms. It flowers in early June and occasionally throughout the summer. Blooms contrast nicely with yellow-blooming plants.


Displaying 1 - 20 of 65 listings   1 | 2 | 3 | 4View AllNext > Sort By: Sort