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Woodland Perennials: P-Z
Most gardeners have some shade, and more gardens have nothing but shade. In general, shade plants grow best in light to moderate shade, and most benefit from some sun in early morning.
Few plants will do well in heavy shade with competition from tree roots. Consider raising or thinning tree branches to improve the quality of shade and air circulation.
Remember that trees take a lot of water and nutrients from the soil, so supplemental watering and fertilizing will be required. The best results will be achieved by creating raised beds with logs or rocks, filled with a mix of coarse sand, soil, and organic matter.
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Pachysandra procumbens 'Kingsville'Our native pachysanda is not as common in gardens as the Japanese species that is overused as a ground cover. The American species does not run, but forms large clumps that seem to live forever. This selection was made many years ago by the late Henr...
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Pachysandra stylosaThis is a little-known evergreen perennial from China, forming attractive clumps of stems bearing very glossy leaves and spikes of white flowers in the leaf axils. It does not spread widely. This distinctive perennial should be more widely planted in...
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Paeonia japonicaAn essential Japanese perennial for light to medium shade, forming handsome 18" tall and wide clumps of attractive gray green foliage. Showy single white flowers with abundant yellow stamens bloom in May. The fruits are bright red "receptacles" with ...
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Paris japonicaAmazing trillium relative (sometimes called Kinugasa japonica) from Japan that is the diva of the late spring garden. Large, showy, white to cream flowers are displayed above a whorl of bold foliage. Mature plants can be nearly 3' tall. Challenging t...
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Paris polyphylla NEW!Tall perennial closely related to Trillium with whorls of leaves, growing to 2-3' tall when established. Has been very easy here in humus-rich well-drained soil in light shade; light to medium shade or morning sun is fine. It will make large clumps w...
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Peliosanthes sp. Thai dwarfThis little plant was found in Thailand where it is sold as an aspidistra. It has now bloomed for Mr. Cedric Basset, and he points out, correctly, that it is a Peliosanthes sp. It only grows to about 6" tall. The leaves are very dark, almost black gr...
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Phaius flavus f. punctatusTerrestrial orchid from southern Japan, with attractive evergreen foliage and tall spikes of beautiful waxy yellow flowers in early summer. This form with spotted leaves occurs in the wild, scattered among green-leaved plants. It is a good pot plan...
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Pinellia tripartita 'Golden Dragon'A woodland perennial growing from a corm, closely related to Arisaema. The three-parted leaves are yellow-splashed or completely yellow. This is not the Pinellia from hell (P. ternata). Pinellia ternata is a well-behaved perennial that self-sows with...
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Pinellia tripartita 'Silver Dragon'A new form of an easy arisaema (jack-in-the-pulpit) relative, with two leaves with three leaflets each. The inflorescence looks much like our native green dragon arisaema. Silver Dragon has leaves that are washed with silvery white, a rare color in t...
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Platycrater argutaThis charming woodland semi-shrub in the hydrangea family should be in every shade garden. It is supremely elegant, with its late summer clusters of nodding white flowers on stems to about 18". It always brightens the shade garden. USDA Zone 6-9.
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Podophyllum difforme Starfish StrainThese are the first offering of our most beautiful podophyllum, the northern hardy strain of Podophyllum difforme. This species has both a tender, more or less evergreen southern form and a hardy, deciduous form that is also more beautiful. This st...
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Podophyllum hexandrumThe Himalayan mayapple, with up-facing pink flowers and green or mottled umbrellas, is one of the easiest and most beautiful of the mayapple group. Attractive red fruit appears in late summer. It thrives in rich, well-drained soil in light to moderat...
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Podophyllum veitchiiThis Chinese mayapple is one of most exciting new shade perennials in years. Fuzzy umbrellas emerge with dark snakeskin markings, often on a red background, changing to patterned green. Flowers can be red, pink, or white. Also called P. delavayi. Thr...
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Polemonium caeruleum subsp. yezoense NEW!Pretty Japanese "Jacob's ladder" with blue flowers atop one to two foot tall stalks in early summer. Attractive compound foliage. Light to moderate shade in rich woodland soil. USDA Zones 4-8.
Grown in 3.5" pots....
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Polemonium yezoense var. hidakanum NEW!A very desirable Japanese "Jacob's ladder" with finely cut foliage, about a foot tall, with clusters of large sky-blue flowers held well above the foliage. Light to moderate shade in well-drained humus-rich soil. USDA Zones 4-8.
Grown in 3.5" pots...
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Polygonatum cryptanthumThis is one of the most interesting and least often encountered Japanese Solomon's seals. It grows to about a foot tall with arching stems. The species' name means "hidden flowers", referring to the pair of green bracts that accompanies and hides eac...
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Polygonatum falcatumThis Solomon's seal is a very common East Asian species in the wild, but it is seldom seen in cultivation. Plants with this name in the West are usually another species. It grows to about 3' tall; its slightly arching stems bear long narrow leaflets ...
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Polygonatum falcatum 'Nippon Sunbeam'This is the first variegated form of the true Polygonatum falcatum to be sold in the US. It is more graceful and more finely textured than P. odoratum. This variety grows to about 2.5 feet tall, with leaves striped with yellow on a green background. ...
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Polygonatum falcatum Silver Lining strainThis very common East Asian species is seldom seen in cultivation. It is tall, to three feet, with slightly arching stems bearing long narrow leaflets and pairs of long cream bells tipped green. This natural strain has silver stripes on the leaves, ...
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Polygonatum humileThis dwarf soloman seal only gets to 6" tall and spreads slowly to make a ground cover. USDA Zones 4-9.
Grown in 3.5" pots....
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Polygonatum inflatumRare species from Northeast Asia. Stems are up to 2' tall with a few leaves. The flowers are dangling cream bells with green tips, enclosed by 2 spreading puffy green bracts. USDA Zones 4-9.
Grown in 3.5" pots....
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Polygonatum kingianumWonderful tall-growing Chinese species with tiers of whorled leaves, curled at the ends, and pink flowers hanging below the leaves. USDA Zones 5-9.
Grown in 3.5" pots....
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Polygonatum lasianthumCommon Japanese species from the mountains in Japan. Stems to 2' with a few broadly oval leaves on red stems. Dangling cream flowers with green tips. USDA Zones 4-9
Grown in 3.5" pots....
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Polygonatum lasianthum 'Kon Chiri Shima'This is the first variegated form P. lasianthum to be sold in the US. It is a low-growing species to about a foot tall. This variety has leaves broadly striped yellow with some leaves altogether yellow. Easy and strong-growing. USDA Zones 4-9.
Gro...
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Polygonatum latifolium NEW!This Solomon's seal is from the Caucasus region. It flowers at about 8 inches to a foot tall, spreading to make a nice ground cover. The flowers are especially beautiful at close range; white with a reflexed frilled green edge. The large blue-black f...
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Polygonatum odoratum 'Byakko'After years of yearning for this exceptional plant we finally got some stock in Japan at enormous cost, and now have enough to sell. This variegated form has a leaf that is half green and half white. The tip of the leaf is green, and part adjoining...
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Polygonatum odoratum 'Dai Ko Ga'This is the plant that always knocks them dead in the garden. It is a new Japanese introduction that emerges screaming yellow and keeps its color through the summer. Slow to divide; we are happy finally to have enough to sell. The Japanese name mean...
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Polygonatum odoratum 'Doublewide'This is the most beautiful white-variegated form of P. odorum, far better than 'Variegatum', which is probably two or three different clones. This is compact to about 1.5 feet tall, with a pure white margin that is much broader and showier than other...
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Polygonatum odoratum 'Fireworks'This rare selection of Solomon's seal has a combination of white margins and cream to yellow striped leaves. The contrast of red stem and bright variegation is remarkably beautiful in a woodland setting. This is a strong grower but heavy demand has m...
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Polygonatum odoratum 'Flora Plenum'This hard to find selection of Solomon's seal has double flowers with many tepals. The flowers are best viewed from below; try this beauty on a slope or on top of a wall. USDA Zones 4-9.
Grown in 3.5" pots....
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Polygonatum odoratum 'Hotei' NEW!The dwarf form of this popular, widespread Asian Solomon's seal is rarely seen in cultivation. It grows to only about 6" tall, with rounded leaves. It spreads into colonies to make a handsome woodland ground cover. Like the species, it is a hearty, e...
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Polygonatum odoratum 'Koryu'New Japanese selection of Solomon's seal with a "dragon ridge" in the center of each leaf, giving the plant unusual textural interest. The ridges become more prominent as the plants are established. USDA Zones 4-9.
Grown in 2.5" pots. Counts as 1/...
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Polygonatum odoratum 'Sanshoku' NEW!I bought a plant of this variegated Solomon's seal in Japan for a lot of money. It was said to be a variegated form of Polygonatum falcatum, but I think it is a form of P. odoratum. It is very pretty, with relatively narrow leaves with broad, bright ...
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Polygonatum odoratum var. maximowiczii NEW!Everything about this gigantic variety of the Japanese Solomon's seal is larger than life. It can grow to more than 3' tall with stout stems and leaves to 8" long. The flowers are about an inch long. Like the more familiar type, this will make large ...
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Primula kisoana 'Noshoku'This Japanese primrose has fuzzy maple shaped leaves and pretty flowers in spring. It spreads quickly by underground runners to make large colonies. Likes loose, humus-rich soil in light to medium shade. This new form has dark magenta pink flowers...
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Primula kisoana 'Velvet'This Japanese primrose has fuzzy maple shaped leaves and pretty flowers in spring. It spreads quickly by underground runners to make large colonies. Likes loose, humus-rich soil in light to medium shade. This form has rich deep pink flowers, an in...
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Primula kisoana f. albaThis Japanese primrose has fuzzy maple shaped leaves and pretty flowers in spring. It spreads quickly by underground runners to make large colonies. Likes loose, humus-rich soil in light to medium shade. This form has pure white flowers. USDA Zon...
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Primula kisoana var. shikokianaThis is a regional variant of the easily grown Primula kisoana that is found on Shikoku island, notable for being covered overall with fine white hairs. Pretty bright pink flowers. Spreads rapidly in loose, woodsy soil. USDA Zone 5-8.
Grown in 3.5...
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Prunella prunelliformisTufted perennial from northern Japan, about a foot tall, with small glossy leaves and clusters of very showy large blue flowers in late summer. USDA Zones 5-9.
Grown in 3.5" pots....
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Pteridophyllum racemosumStrange and rare woodland perennial from the mountains of nothern Japan. The evergreen foliage looks like a clumping fern until the 10" scapes of white flowers bloom in summer. No one will guess that it is in the poppy family. Rock garden or trough ...
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Rabdosia longitubaThis is an unaccountably neglected Japanese perennial with many virtues, for fall bloom. Purple flowers are long and tubular, held by the hundreds in airy panicles on stems about 3' tall. One of the most remarkable perennials in the late fall garden....
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Rabdosia longituba 'Momokaze'This is a new selection of an unaccountably neglected Japanese perennial with many virtures, for late fall bloom. The species has deep purple flowers are long and tubular, held by the hundreds in airy panicles on stems about 3' tall. This new select...
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