MYOSOTIS palustris
(my-oh-SO-tiss) (pal-US-tris) | MYOSPA3 |
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| Common Name: Forget-Me-Not |
| Description: Light, bright blue flowers. Perennial forget-me-not. |
| Zone: 5 |
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NEPETA 'Psfike' PP# 18,904 (LITTLE TRUDY®)
(NEP-eh-tah) | NEPELT3 |
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| Common Name: Catmint |
| Description: 2008 Plant Select®. Distinctively serrated, silvery foliage with long season, lavender blooms. A compact cultivar thriving in xeric conditions. Propagation Prohibited. |
| Zone: 4 |
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NEPETA x faas. 'Novanepjun'PP23074 Junior Walker™
(NEP-eh-tah) | NEPEJW3 |
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| Common Name: Catmint |
| Description: This is the more dense and compact form of 'Walker's Low'. Lavender-blue blooms; long flowering and will not reseed. Bred and selected by Star Roses and Plants. |
| Zone: 5 |
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NEPETA x faassenii 'Blue Wonder'
(NEP-eh-tah) (fah-SEEN-ee-eye) | NEPEBW3 |
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| Common Name: Catmint |
| Description: Spectacular ground cover; 6", blue flower spikes. |
| Zone: 4 |
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NEPETA x faassenii 'Walker's Low'
(NEP-eh-tah) (fah-SEEN-ee-eye) | NEPEWL3 |
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| Common Name: Catmint |
| Description: 2007 PPA Plant of the Year! Walker's Low is named for a garden and the name is not related to plant size- sorry for any confusion! Lovely, violet-blue flowers over a long period; attractive, gray-green foliage. Lack of pest or disease problems and low maintenance make it a winner. Deer and rabbit resistant. |
| Zone: 3 |
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NEPETA x faassenii 'Walker's Low'
(NEP-eh-tah) (fah-SEEN-ee-eye) | NEPEWL1 |
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| Common Name: Catmint |
| Description: 2007 PPA Plant of the Year! Walker's Low is named for a garden and the name is not related to plant size- sorry for any confusion! Lovely, violet-blue flowers over a long period; attractive, gray-green foliage. Lack of pest or disease problems and low maintenance make it a winner. Deer and rabbit resistant. |
| Zone: 3 |
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OENOTHERA berlandieri 'Siskiyou'
(e-NOTH-er-a) (ber-lan-dee-ER-ee) | OENOSI3 |
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| Common Name: Mexican Evening Primrose |
| Description: Fragrant, 2", pink blooms throughout the summer. Very hardy plant if given good drainage. Smaller and less invasive than Oenothera speciosa, although some taxonomists claim berlandiera = speciosa! |
| Zone: 5 |
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OENOTHERA m. subsp. incana (SILVER BLADE®)
(e-NOTH-er-a) (mak-roe-KAR-pa) | OENOSB3 |
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| Common Name: Evening Primrose, Sundrops |
| Description: 1999 Plant Select®. Southern Great Plains plant introduced by James Locklear, formerly of Nebraska Statewide Arboretum. Silvery-blue leaves complimented by huge, clear yellow flowers from May til frost. Drought tolerant perennial. Best on well-drained sites. |
| Zone: 4 |
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OENOTHERA macrocarpa [missouriensis]
(e-NOTH-er-a) (mak-roe-KAR-pa) | OENOMA3 |
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| Common Name: Missouri Primrose |
| Description: RHS Award of Garden Merit. Large, deep yellow flowers; sprawling plant with glossy, dark green leaves. |
| Zone: 4 |
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OENOTHERA macrocarpa subsp. fremontii
(e-NOTH-er-a) (mak-roe-KAR-pa) | OENOFR3 |
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| Common Name: Evening Primrose, Sundrops |
| Description: Large, light yellow flowers beginning in May; most have glaucous leaves, narrower than species. Drought tolerant plants, native to NE & KS. |
| Zone: 4 |
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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 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 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 '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 '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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