Origanum laevigatum ORNAMENTAL OREGANO Aromatic plants with outstanding bursts of butterfly attracting flowers. Prefers hot bright sun and well drained gravelly soil. Plant habit is upright to sprawling. Drought tolerant. Young leaves are tinted burgundy and the color intensifies in the autumn. Useful in rock gardens or as a small-scale ground cover. They make excellent cut flowers. O. 'Rosenkuppel' was selected as Perennial Plant of the year in Holland '98. Origanum r. 'Kent Beauty' Rounded grey green leaves clasp the wiry stems and form a dense low mound. Unusual pendant hop-like bracts are pale green and turn to a deep rose pink. Good drainage is key. Fine rock garden, container or front of the border plant.
Origanum laevigatum 'Herrenhausen'
|
18 - 30 in.
|
18 - 24 in.
|
reddish purple
|
lt. sum.- aut
|
Su
|
clump
|
Origanum 'Rosenkuppel'
|
15 - 18 in.
|
18 - 24 in.
|
pink
|
lt. sum.- aut
|
Su
|
clump
|
Origanum rotundifolium 'Kent Beauty'
|
9 in.
|
18 in.
|
pink
|
summer
|
Su
|
clump
|
Plant Descriptions: Beginning with Letter P
BOTANICAL NAME
|
HEIGHT
|
SPACING
|
COLOR
|
SEASON
|
LIGHT
|
HABIT
|
Pachysandra procumbens ALLEGHENY SPURGE Form handsome clumps with clearly veined, brownish mottled leaves turning bronze in autumn. An underused plant, great where a small planting is needed. Pachysandra t. 'Green Sheen' JAPANESE SPURGE this useful and rapid growing ground cover has very glossy green leaves, a refreshing variation of the common but effective Pachysandra terminalis.
Pachysandra procumbens
|
9 - 12 in.
|
12 - 18 in.
|
pinkish white
|
spring
|
pSh-Sh
|
clump
|
Pachysandra terminalis 'Green Sheen'
|
9 - 12 in.
|
18 in.
|
white
|
lt. Spring
|
pSh-Sh
|
spreader
|
Paeonia [Lactiflora Group] PEONY Appreciate a rich, well drained moist and fertile soil with bonemeal and humus added. In addition to their large and beautiful flowers, they have superb foliage, often with reddish young growth in spring and luxurious green all season. These are among the longest-lived plants. P. suffruticosa TREE PEONY, has a shrubby habit and woody growth 4 to 5+ ft. tall with gigantic flowers 7 to 10 in. across. It is important to locate this plant away from trees and where they are sheltered from north and east winds. They are best when planted in a friable, moist, fertile "vegetable garden" soil with good drainage, similar to what is needed for herbaceous peonies. Too much water can lead to fungus problems.
Paeonia ( cvs./color) [Lactiflora Group]
|
1.5 - 3.5 ft.
|
2 - 3 ft.
|
various
|
l. spring
|
Su
|
clump
|
Paeonia suffruticosa
|
4 - 5 ft.
|
3 - 4 ft.
|
various
|
mid - l.spring
|
Su
|
shrub
|
Papaver orientale ORIENTAL POPPY Hardy, long-lived plants, thriving in deep, well drained average soil. They require average moisture and do not tolerate wet soil conditions in winter. Enormous flowers are brilliantly colored and visually dominant around green, long, hairy and sharply toothed leaves. Plants go dormant during the summer, yet well known as worthy for their part in the drama of the season's succession of growth and bloom. Worth some plans for the dormant gap.
Papaver orientale (labeled cvs. / color)
|
1 - 3 ft.
|
2 ft.
|
various
|
l. spring
|
Su
|
clump
|
Penstemon digitalis 'Husker's Red' BEARDTONGUE Rounded to lance shaped leaves which are elongated, red and slightly greenish. Flowers are carried atop long dark stems and seem to hang in midair. Great clump former for your sun border. Likes drying out before watering again. Selected as the 1996 Perennial Plant Association Plant of the Year.
Penstemon digitalis 'Husker Red'
|
30 in.
|
18 in.
|
white
|
summer
|
Su
|
clump
|
Perovskia atriplicifolia RUSSIAN SAGE Aromatic subshrub with a long season of beauty for well drained, ordinary soil of dry conditions. Cut back to the ground in spring to promote good growth and flowers. Requires full sun. The masses of blue flowers against the gray foliage are impressive. Leaves are lance shaped and coarsely toothed. P. 'Longin' has more compact foliage and less serrated leaves than the species. The leaves are larger than those of P. 'Filigran', which has bushier foliage with a very fine textured appearance.
Perovskia atriplicifolia
|
4 ft.
|
18 - 24 in.
|
blue
|
sum. - l. sum.
|
Su
|
clump
|
Perovskia 'Little Spire'
|
25 in.
|
2 - 3 ft.
|
lavender blue
|
sum - l. sum.
|
Su
|
clump
|
Perovskia 'Longin'
|
3 - 4 ft.
|
18 - 24 in.
|
lavender
|
sum. - l. sum.
|
Su
|
clump
|
Perovskia 'Filigran'
|
42 in.
|
18 - 24 in.
|
blue
|
sum. - l. sum.
|
Su
|
clump
|
Persicaria (Polygonum) KNOTWEED While this genus contains some dangerously invasive species, some of the more garden worthy kinds are grown extensively in Europe. Persicaria a. 'Speciosa' will form large dense colonies in time, growing best in good light with consistent moisture. Persicaria polymorphathis bold clump former is very tolerant of heat, humidity and drought. A fine specimen plant similar to Aruncus dioicus in garden effect. Wolfgang Oehme celebrates this useful and adaptable plant in mass plantings. Does not run. This Knotweed is not a weed. Persicaria 'Red Dragon' offers vibrant tricolor foliage with burgundy, mint green and silver chevron patterns. Emerges late but soon grows to form lush foliage clumps. Then as the season progresses, the arching stems give the plant a loose vase shaped character. More so in shadier conditions the long branches grow out horizontaly and weave at mid height among neighboring plants or garden ornaments. Tiny white flowers bloom mid to late season.
Persicaria amplexicaulis 'Speciosa' (Firetail)
|
4 ft.
|
2 - 3 ft.
|
crimson scarlet
|
summer
|
Su-pSh
|
spreader
|
Persicaria polymorpha
|
4 - 6 ft.
|
3 - 4 ft.
|
creamy white
|
e.sum.- aut.
|
Su-pSh
|
clump
|
Persicaria 'Red Dragon'
|
24 - 36 in.
|
1 - 2 ft.
|
creamy white
|
mid sum.-fall
|
Su-pSh
|
clump
|
Phlox divaricata WILD BLUE PHLOX Semi-evergreen woodlander with fragrant flowers. Forms loose sprawling and slowly spreading mats. Cut back after flowering to encourage additional growth. Mulch to protect the shallow root system from summer heat and winter frost heaving. Fine edging plant for moist well drained and partially shaded areas.
Phlox divaricata 'London Grove Blue'
|
8 - 10 in.
|
12 - 18 in.
|
lt. blue fragrant
|
spring
|
pSh-Su
|
spreader
|
Phlox divaricata 'May Breeze'
|
8 - 10 in.
|
12 - 18 in.
|
lt. blue
|
spring
|
pSh-Sh
|
spreader
|
Phlox glaberrima SMOOTH PHLOX An attractive E. USA native forming upright bushy mounds of smooth green glossy leaves. In late spring to early summer plants are topped with clusters of fragrant flowers. Thrives in heat and humidity. For average soils and acid to neutral PH. Cut back after blooming to encourage fresh new foliage.
Phlox glaberrima 'Morris Berd'
|
10 - 12 in.
|
12 - 21 in.
|
rose pink
|
l. spr.-e.sum
|
Su-pSh
|
spreader
|
Phlox [Paniculata Group] BORDER PHLOX, SUMMER PHLOX Plant in deep, rich, porous, moist and fertile soil, well enriched with organic matter. Roots need abundant water especially prior to flowering and especially in drought. Remove the main flower cluster when it fades to encourage flowering of side shoots. Leaves are green and willowy, handsome and sturdy. Air circulation is important. Cut to 4 to 6 strong stems in spring. While fragrant Phlox 'David', 'Shortwood' and 'Franz Schubert' seem to exhibit only a tolerable level of mildew problems, Phlox 'Robert Poore' a Niche Gardens introduction, appears to be the most mildew resistant Phlox paniculata yet.
Phlox 'Blue Paradise'
|
30 in.
|
24 in.
|
violet blue
|
summer
|
Su
|
clump
|
Phlox 'Bright Eyes'
|
2 - 3 ft.
|
2 ft.
|
pink/red eye
|
summer
|
Su
|
clump
|
Phlox 'David'
|
4 - 5 ft.
|
2 ft.
|
white
|
summer
|
Su
|
clump
|
Phlox 'David's Lavender'
|
36 - 48 in.
|
24 - 36 in.
|
lavender pink
|
summer
|
Su
|
clump
|
Phlox 'Franz Schubert'
|
3.5 ft.
|
2 ft.
|
cool lilac
|
summer
|
Su
|
clump
|
Phlox 'Juliet'
|
2 ft.
|
2 ft.
|
pale pink
|
summer
|
Su
|
clump
|
Phlox 'Little Boy'
|
30 in.
|
12 - 18 in.
|
mauve-blue
|
summer
|
Su
|
clump
|
Phlox 'Little Princess'
|
20 - 24 in.
|
12 - 18 in.
|
pink w/ white
|
sum.-e.fall
|
Su
|
clump
|
Phlox 'Nicky'
|
36 - 48 in.
|
2 ft.
|
magenta
|
summer
|
Su
|
clump
|
Phlox 'Robert Poore'
|
4 - 5 ft
|
2 - 3 ft.
|
pink
|
summer
|
Su
|
clump
|
Phlox 'Shortwood'
|
3 - 4 ft.
|
2 ft.
|
vivid pink
|
summer
|
Su
|
clump
|
Phlox 'Starfire'
|
3 ft.
|
2 ft.
|
red pink
|
summer
|
Su
|
clump
|
Phlox 'Tracy's Treasure'
|
4 ft.
|
18 - 24 in.
|
soft pink
|
summer
|
Su
|
clump
|
Phlox stolonifera CREEPING PHLOX A colorful addition to shady areas. Low evergreen mats with smooth 3/4 in. to 1 1/2 in.ovate leaves. Erect stems arise above foliage and loosely bloom, making a dense and attractive cover.
Phlox stolonifera 'Blue Ridge'
|
6 in.
|
12 - 18 in.
|
lavender blue
|
l. spring
|
pSh - Sh
|
carpet root.
|
Phlox stolonifera 'Bruce's White'
|
6 in.
|
12 - 18 in.
|
white
|
l. spring
|
pSh - Sh
|
carpet root.
|
'Phlox stolonifera 'Home Fires'
|
6 in.
|
12 - 18 in.
|
pink
|
l. spring
|
pSh - Sh
|
carpet root.
|
Phlox stolonifera 'Sherwood Purple'
|
6 in.
|
12 - 18 in.
|
blue purple
|
l. spring
|
pSh - Sh
|
carpet root.
|
Phlox subulata MOUNTAIN PINKS, MOSS PINK Well known by the general public and can be seen all over in American gardens. Easily grown in well drained moderately fertile soil with average moisture and full sun. Narrow leaves 1/2 in. long grow close together with a stiffness like pine needles. Flowers open and profusely cover the entire carpeting foliage in blue, white, purple or most commonly pink with a darker eye, with varied striped forms in each color.
Phlox subulata (cvs./colors)
|
4 in.
|
2 ft.
|
various
|
spring
|
Su
|
carpet
|
Physocarpus ‘Summer Wine’ NINEBARK A dark foliaged, handsome compact form of the native P. opulifolius. Leaves are deeply incised creating an overall soft texture. Pink buds give way to blush-white flowers, which contrast prominently with the dark foliage. Bark exfoliates with age revealing a rich brown inner bark. Plant in full sun for best floral display and to retain the rich crimson foliage.
Physocarpus 'Summer Wine'
|
5 - 6 ft.
|
6 ft.
|
pinkish white
|
mid summer
|
Su
|
shrub
|
Physostegia virginiana 'Vivid' FALSE DRAGONHEAD, OBEDIENT PLANT A very prolific and undemanding plant for any average garden soil with average moisture. Every couple of years, dig up and replant a healthy chunk to restrain growth, particularly when sited in moist, light soils. Leaves are green, sharp toothed and lance shaped. This cultivar is the most compact and stiffly upright. A long blooming attention getter. Physostegia v. 'Ms. Manners' is a recent introduction and offers a more restrained clump forming habit and white flowers over dark green glossy foliage.
Physostegia virginiana 'Ms. Manners'
|
18 - 24 in.
|
2 ft.
|
white
|
sum.-e.fall
|
Sp-Sh
|
clump
|
Physostegia virginiana 'Rosea'
|
3 ft.
|
2 - 2.5 ft.
|
pink
|
summer
|
Su
|
spreader
|
Physostegia virginiana 'Vivid'
|
24 - 30 in.
|
2 ft.
|
orchid pink
|
l. summer
|
Su
|
spreader
|
Platycodon grandiflorus BALLOON FLOWER Balloon buds open to wide cup flowers over handsome blue green leaves closely arranged up the stems. Requires fertile soil. This hardy and long-lived plant is slow to emerge in the spring. The tap roots look like white carrots and care should be taken to keep them intact when transplanting or dividing a clump which is rarely necessary. Long bloomer and excellent cut flower if seared. Stirs the child in everyone when flower buds "balloon -up", and then open from the top rather than the side or base.
Platycodon grandiflorus 'Fuji Blue'
|
20 in.
|
12 - 18 in.
|
blue
|
summer
|
Su
|
clump
|
Platycodon grandiflorus 'Mariesii'
|
2 ft.
|
12 - 18 in.
|
blue
|
summer
|
Su
|
clump
|
Platycodon grandiflorus 'Sentimental Blue'
|
6 - 10 in.
|
12 - 18 in.
|
blue
|
summer
|
Su
|
clump
|
|
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