OENOTHERA macrocarpa 'Comanche Campfire'
(e-NOTH-er-a) (mak-roe-KAR-pa) | OENOCC3 |
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| Common Name: Evening Primrose, Sundrops |
| Description: 2001 GreatPlantsTM Introduction. The large, shiny silver, drought and sun resistant leaves are complimented by glowing ruby stems topped with huge, delicious yellow flowers until fall. Cutting propagated from an outstanding seedling grown from seed collected in Western Oklahoma by the GreatPlants for the Great Plains group of Nebraska. Limited supply after 4/15. |
| 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 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 japonicus 'Pygmaeus'
(oh-fee-oh-POE-gon) (ja-PON-ih-kus) | OPHIPY3 |
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| Common Name: Lilyturf, Mondo Grass |
| Description: Miniature with tightly packed, rich green leaves. Slow growing. Use in the trough or dish garden. |
| Zone: 5 |
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OPHIOPOGON japonicus 'Silver Dragon'
(oh-fee-oh-POE-gon) (ja-PON-ih-kus) | OPHISD5 |
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| Common Name: Lilyturf, Mondo Grass |
| Description: White variegated selection. |
| Zone: 6 |
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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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OPLISMENUS hirtellus 'Variegatus'
(op-LIS-men-us) (hir-TEL-us) | GROPHV3 |
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| Common Name: |
| Description: RHS Award of Garden Merit. Fine textured, tropical, striped white tinted pink to red grass for combos and lovely skirts for planters and baskets. Branches thickly and trails. |
| Zone: 9 |
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ORIGANUM laevigatum 'Herrenhausen'
(oh-RIG-an-um) (lay-vih-GAY-tum) | ORIGHE1 |
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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 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 laevigatum 'Hopleys'
(oh-RIG-an-um) (lay-vih-GAY-tum) | ORIGHO1 |
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| Common Name: |
| Description: Selection with blue foliage; purple flowers. |
| Zone: 5 |
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ORIGANUM laevigatum 'Hopleys'
(oh-RIG-an-um) (lay-vih-GAY-tum) | ORIGHO3 |
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| Common Name: |
| Description: Selection with blue foliage; purple flowers. |
| 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 majorana
(oh-RIG-an-um) (may-jor-AH-na) | HBORMA3 |
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| Common Name: Sweet Marjoram, Italian Oregano |
| Description: Essential, annual, culinary herb for seasoning sausage, vegetables, meats, and Italian sauces. |
| Zone: 7 |
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ORIGANUM majorana 'Variegata'
(oh-RIG-an-um) (may-jor-AH-na) | HBORMV3 |
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| Common Name: Variegated Sweet Marjoram |
| Description: Foliage variegated with white forms an attractive mat. |
| Zone: 7 |
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ORIGANUM onites
(oh-RIG-an-um) (o-NEE-teez) | HBORON3 |
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| Common Name: Pot Marjoram, Rigani |
| Description: Premier oregano for cooking! Sub-shrub with small, white flowers; superb, spicy mint flavor. It's high thymol and carvacrol content makes its oil a useful fungicide and disinfectant. |
| Zone: 6 |
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ORIGANUM prismaticum
(oh-RIG-an-um) (priz-MAT-ih-kum) | HBORPR3 |
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| Common Name: Greek Oregano |
| Description: Robust flavor. |
| Zone: 7 |
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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 vulgare
(oh-RIG-an-um) (vul-GARE) | HBORVU3 |
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| Common Name: Oregano |
| Description: Necessary herb for Italian cooking. Dry for winter use. |
| Zone: 4 |
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ORIGANUM vulgare
(oh-RIG-an-um) (vul-GARE) | HBORVU1 |
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| Common Name: Oregano |
| Description: Necessary herb for Italian cooking. Dry for winter use. |
| Zone: 4 |
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ORIGANUM vulgare 'Aureum'
(oh-RIG-an-um) (vul-GARE) | HBORVA3 |
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| Common Name: Golden Oregano |
| Description: RHS Award of Garden Merit. Rare variety; gold, aromatic foliage. |
| Zone: 4 |
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ORIGANUM vulgare 'Hot & Spicy'
(oh-RIG-an-um) (vul-GARE) | HBORHS3 |
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| Common Name: |
| Description: Dark green leaves are strongly aromatic; tiny, white to purple-pink flowers. Noted for its intense, somewhat spicy flavor; use fresh or dried. |
| Zone: 4 |
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ORIGANUM x 'Amethyst Falls'
(oh-RIG-an-um) | ORIGAF3 |
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| Common Name: |
| 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 malacophyllus
(or-oh-STAK-ees) (ma-la-KO-fill-us) | OROSMA3 |
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| Common Name: Dunce Caps |
| Description: Very large rosettes of pale green with young pups on the underside.
An eye-catcher for the rock garden. |
| Zone: 5 |
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OROSTACHYS minutum
(or-oh-STAK-ees) (my-NEW-tum) | OROSMI3 |
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| Common Name: Dunce Caps |
| Description: A classy, petite, Hen & Chick-like succulent with narrow, pointed, fleshy blue leaves. Needs a well-drained site. |
| Zone: 6 |
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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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ORTHOSIPHON aristatus
(or-tho-SY-fon) (a-ris-TAH-tus) | ORTHAR4 |
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| Common Name: Cat's Mustache |
| Description: Oblong clusters of tubular, white flowers with distinctive, long, protruding stamens. Hairy, toothed leaves used medicinally in some parts of the world. |
| Zone: 9 |
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ORYZOPSIS hymenoides
(or-ry-ZOP-sis) (hy-men-OY-deez) | GRORHY5 |
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| Common Name: Indian Rice Grass, Sand Grass, Silky Grass |
| Description: Cool season clumper is an excellent choice for hot, dry sites from Z 4-10, in sandy or average, well-drained, full sun conditions. This historically important American food grain makes an impressive, fine textured grass feature with its showy, open panicles in spring. |
| Zone: 4 |
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