OENOTHERA pilosella 'Yella Fella'
(e-NOTH-er-a) (py-LOH-sell-ah) | OENOYF3 |
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| Common Name: Evening Primrose, Sundrops |
| Description: Large, brilliant golden flowers open from bright orange buds. Intense green, hairy foliage turns reddish in fall. Blooms all summer. |
| Zone: 4 |
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OPHIOPOGON chingii 'Sparkler'
(oh-fee-oh-POE-gon) (ja-PON-ih-kus) | OPHISP3 |
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| Common Name: Lilyturf, Mondo Grass |
| Description: Fine-leafed dwarf with rich, deep green leaves adorned with sparkling white flowers followed by blue berries. A must for the small or miniature garden. Species corrected from japonicus. |
| Zone: 5 |
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OPHIOPOGON planiscapus 'Niger'
(oh-fee-oh-POE-gon) (plan-iss-KAP-us) | OPHINI5 |
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| Common Name: Black Mondo Grass |
| Description: RHS Award of Garden Merit. Distinctive, very dark purple foliage with pale lilac-pink flowers July-August. Slow growing edger, ground cover, or contrast plant with Hosta or other paler foliage plants. Best in part shade and moist soil, but will tolerate full sun. |
| Zone: 5 |
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ORIGANUM laevigatum 'Herrenhausen'
(oh-RIG-an-um) (lay-vih-GAY-tum) | ORIGHE3 |
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| Common Name: |
| Description: RHS Award of Garden Merit. Sub-shrub with small, aromatic leaves. Profusion of small, cerise-pink flowers and red-purple bracts. Spectacular in late summer and fall. |
| Zone: 5 |
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ORIGANUM libanoticum
(oh-RIG-an-um) (li-ba-NO-ti-kum) | ORIGLI3 |
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| Common Name: Hopflower Oregano |
| Description: 2004 Plant Select®. Vigorous, trailing herb with hops-like bracts of lavender and chartreuse throughout the summer and fall. Looks best cascading over a raised bed, rock garden, or container. Needs well-drained site. |
| Zone: 4 |
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ORIGANUM rotundifolium 'Kent's Beauty'
(oh-RIG-an-um) (ro-tun-di-FO-lee-um) | ORIGKB3 |
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| Common Name: Kent's Dittany |
| Description: Semi-prostrate, branching stems covered with hops-like pods and lavender florets in summer and fall. Needs well-drained soil. Incredible in containers or growing over a boulder. |
| Zone: 6 |
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ORIGANUM x 'Amethyst Falls'
(oh-RIG-an-um) | ORIGAF3 |
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| Description: An outstanding, long blooming selection by Harlan from seed produced in the Kelaidis' garden several years ago. In addition to amethyst flowers flowing abundantly from ornamental, hops-like cones and attractive, textured, glaucous leaves this drought resistant plant's foliage fills the garden air with its exciting, spicy scent. |
| Zone: 5 |
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OROSTACHYS aggregeatus
(or-oh-STAK-ees) (ag-GREG-ee-a-tus) | OROSAG3 |
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| Common Name: Dunce Caps |
| Description: Neat, green, succulent rosettes from the Far East for the rock garden. White creamy flowers in late summer. No wet feet in winter. |
| Zone: 5 |
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OROSTACHYS iwarenge
(or-oh-STAK-ees) (iwa-renge) | OROSIW3 |
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| Common Name: Dunce Caps |
| Description: Choice, low, gray, succulent rosettes. |
| Zone: 5 |
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OROSTACHYS spinosus
(or-oh-STAK-ees) (spine-OH-sus) | OROSSP3 |
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| Common Name: Dunce Caps |
| Description: One of the finest. Similar to miniature Sempervivum and appears to have a white leaf margin. Stunning plant in the trough or rock garden. |
| Zone: 4 |
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OSTEOSPERMUM 'Avalanche' PP# 22,705
(oss-tee-oh-SPERM-um) | OSTEAV3 |
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| Common Name: Avalanche White Sun Daisy |
| Description: 2011 Plant Select®. Dazzling white flowers with a coppery backing from April through summer. Mats of lustrous, nearly succulent, evergreen foliage. Greater disease resistance and heavier bloom than other sun daisies. Propagation Prohibited. |
| Zone: 4 |
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OTHONNA capensis
(o-THON-a) (ka-PEN-sis) | OTHOCA3 |
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| Common Name: Little Pickles |
| Description: Blue-green, cylindrical leaves with stems of bright yellow daisies above foliage. A succulent Senecio selection for the sunny rock garden brought from Drakenberg Mountains of South Africa by Denver Botanic Garden's Panayoti Kelaidis. |
| Zone: 5 |
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OXALIS crassipes 'Rosea'
(oks-AL-iss) (KRASS-ih-peez) | OXALRO3 |
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| Common Name: Strawberry Oxalis |
| Description: Showy, rose-pink flowers on this hardy oxalis for shade. Limited supply. |
| Zone: 5 |
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PACHYSANDRA terminalis
(pak-ih-SAN-drah) (ter-min-AL-iss) | PACHTE3 |
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| Common Name: Spurge |
| Description: Excellent ground cover for shade; forms a dense, shiny carpet of foliage. |
| Zone: 4 |
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PACHYSANDRA terminalis
pak-ih-SAN-drah)(ter-min-AL-iss) | PACHTE5 |
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| Common Name: Spurge |
| Description: Excellent ground cover for shade; forms a dense, shiny carpet of foliage.
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| Zone: 4 |
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PACHYSANDRA terminalis
(pak-ih-SAN-drah) (ter-min-AL-iss) | PACHTE1 |
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| Common Name: Spurge |
| Description: Excellent ground cover for shade; forms a dense, shiny carpet of foliage. |
| Zone: 4 |
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PACHYSANDRA terminalis 'Green Carpet'
(pak-ih-SAN-drah)(ter-min-AL-iss) | PACHGC5 |
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| Common Name: Spurge |
| Description: RHS Award of Garden Merit. Broader leaves that are darker and shinier green; plants are more compact and slower spreading than species. Choice variety.
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| Zone: 4 |
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PACHYSANDRA terminalis 'Green Carpet'
(pak-ih-SAN-drah) (ter-min-AL-iss) | PACHGC3 |
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| Common Name: Spurge |
| Description: RHS Award of Garden Merit. Broader leaves that are darker and shinier green; plants are more compact and slower spreading than species. Choice variety. |
| Zone: 4 |
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PACHYSANDRA terminalis 'Green Sheen'
(pak-ih-SAN-drah) (ter-min-AL-iss) | PACHGS5 |
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| Common Name: Spurge |
| Description: Smaller, very glossy, dark green leaves. Slow-spreading variety; most heat tolerant selection. |
| Zone: 4 |
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PACHYSANDRA terminalis 'Green Sheen'
(pak-ih-SAN-drah) (ter-min-AL-iss) | PACHGS3 |
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| Common Name: Spurge |
| Description: Smaller, very glossy, dark green leaves. Slow-spreading variety; most heat tolerant selection. |
| Zone: 4 |
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PACHYSANDRA terminalis 'Green Sheen'
(pak-ih-SAN-drah) (ter-min-AL-iss) | PACHGS1 |
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| Common Name: Spurge |
| Description: Smaller, very glossy, dark green leaves. Slow-spreading variety; most heat tolerant selection. |
| Zone: 4 |
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PACHYSANDRA terminalis 'Silver Edge'
(pak-ih-SAN-drah) (ter-min-AL-iss) | PACHSI3 |
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| Common Name: Spurge |
| Description: Attractive, light green leaves with narrow, silver-white edge. |
| Zone: 4 |
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PAEONIA lactiflora 'Duchesse de Nemours'
(pay-OH-nee-ah) (lak-tih-FLOOR-ah) | PAEODD8 |
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| Common Name: Peony |
| Description: RHS Award of Garden Merit. Early, fragrant, white, double flowers. |
| Zone: 3 |
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PAEONIA lactiflora 'Karl Rosenfield'
(pay-OH-nee-ah) (lak-tih-FLOOR-ah) | PAEOKR8 |
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| Common Name: Peony |
| Description: Deep red, double flowers; medium early. |
| Zone: 3 |
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PAEONIA lactiflora 'Peter Brand'
(pay-OH-nee-ah) (lak-tih-FLOOR-ah) | PAEOPB8 |
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| Common Name: Peony |
| Description: Large, full, deep red, fully double flowers. One of the best red doubles. |
| Zone: 3 |
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Paeonia lactiflora 'Red Sarah Bernhardt'
(pay-OH-nee-ah) | PAEORS8 |
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| Common Name: Peony |
| Description: This late-flowering peony starts out dark pink changing to red and has all the features of Sarah Bernhardt. Long strong stems make it excellent for cutting.
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| Zone: 3 |
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PAEONIA lactiflora 'Sarah Bernhardt'
(pay-OH-nee-ah) (lak-tih-FLOOR-ah) | PAEOSB8 |
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| Common Name: Peony |
| Description: RHS Award of Garden Merit. Fragrant, deep pink, double flowers; late flowering. |
| Zone: 3 |
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PAEONIA 'Red Charm'
(pay-OH-nee-ah) | PAEORC8 |
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| Common Name: Peony |
| Description: Glossy, long-lasting, large, deep red, pom-pom flowers on strong stems in mid to late spring. Great for cut flowers. This hybrid is an American Peony Society Gold Medal Winner. |
| Zone: 2 |
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PAEONIA x 'Flame'
(pay-OH-nee-ah) | PAEOFL8 |
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| Common Name: Peony |
| Description: Hot pink, single flowers with orange tones in late May-June. Strong stems make it an excellent cut. |
| Zone: 3 |
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PAPAVER orientale 'Allegro'
(pah-PAH-ver) (or-ee-en-TALE) | PAPAAL3 |
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| Common Name: Poppy |
| Description: Enormous, 6", dazzling scarlet, black-eyed flowers. |
| Zone: 3 |
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