POLEMONIUM yezoense 'Purple Rain Strain'
(pole-MONE-ee-um) (yez-oh-ENSE) | POLEPR3 |
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| Common Name: Jacob's Ladder, Greek Valerian |
| Description: Large, violet flowers on upright stems; foliage during winter through early summer is reddish-purple, mostly with dark stems. In shady site or in summer, leaves are green. Reblooms after deadheading. |
| Zone: 4 |
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POLYGONATUM biflorum
(pol-ig-on-AY-tum) (bi-FLOOR-um) | POLYBI5 |
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| Common Name: Solomon's Seal |
| Description: Woodland wildflower with arching stems. White flowers followed by black berries. |
| Zone: 3 |
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POLYGONATUM humile
(pol-ig-on-AY-tum) (HEW-mih-lee) | POLYHU3 |
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| Common Name: Solomon's Seal |
| Description: Lovely woodland creeper with upright stems with glossy, somewhat pleated leaves. Greenish-white flowers dangle from the leaf axils late spring to early summer, becoming globular; black fruit in late summer. |
| Zone: 5 |
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POLYGONATUM multiflorum 'Variegatum'
(pol-ig-on-AY-tum) (mul-tee-FLOOR-um) | POLYVA5 |
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| Common Name: Solomon's Seal |
| Description: 2013 PPA Plant of the Year. 2004 GreatPlantsTM Perennial of the Year! White edged leaves. Tiny, white, bell flowers in spring on arching stems. |
| Zone: 3 |
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POTENTILLA nepalensis 'Ron McBeath'
(poe-ten-TIL-lah) (nap-ahl-EN-sis) | POTERM3 |
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| Common Name: Cinquefoil, Five Finger |
| Description: Bright carmine-red flowers over long season on clean, neat, disease-free foliage. Big improvement over 'Miss Willmott'. |
| Zone: 5 |
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POTENTILLA neumanniana
(poe-ten-TIL-lah) (NEW-man-ee-ah-na) | POTENE3 |
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| Common Name: Cinquefoil, Five Finger |
| Description: Mat-forming ground cover with bright yellow flowers. |
| Zone: 4 |
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PRIMULA denticulata Mix
(PRIM-yew-la) (den-tik-yew-LAH-ta) | PRIMDM3 |
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| Common Name: Drumstick Primrose |
| Description: RHS Award of Garden Merit. Dense cluster of flowers in red-purple to white held above a whorl of textured leaves. |
| Zone: 4 |
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PRIMULA japonica Mix
(PRIM-yew-la) (ja-PON-ih-ka) | PRIMJM3 |
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| Common Name: Primrose |
| Description: Lovely red tones of Candelabra-type flowers. |
| Zone: 5 |
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PRIMULA x bulleesiana
(PRIM-yew-la) | PRIMBU3 |
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| Common Name: Primrose |
| Description: A Candelabra with a bright color range of blossoms from yellow to red to violet. |
| Zone: 5 |
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PRIMULA x pubescens (Auricula Mix)
(PRIM-yew-la) (ow-RIK-yew-la) | PRIMAU3 |
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| Common Name: Primrose |
| Description: RHS Award of Garden Merit. Favorite, early spring bloomer. |
| Zone: 2 |
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PULMONARIA longifolia 'Coral Springs'
(pul-mon-AIR-ee-a) (long-ee-FO-lee-a) | PULMCS8 |
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| Common Name: Lungwort |
| Description: Early spring blooming; coral-pink flowers on clump forming plant. Dark green leaves speckled with silver. Great for mass plantings. |
| Zone: 3 |
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PULMONARIA longifolia 'E.B. Anderson'
(pul-mon-AIR-ee-a) (long-ee-FO-lee-a) | PULMEB8 |
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| Common Name: Lungwort |
| Description: Clusters of lilac-blue, tubular flowers in spring on clump forming perennial. Long, lance-shaped leaves that are dark green with silvery blotches. Good specimen for front of shady border, or as ground cover in shade. Foliage remains attractive after flowering. |
| Zone: 3 |
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PULSATILLA patens
(pull-sah-TIL-lah) (PA-tenz) | PULSPA3 |
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| Common Name: Pasque Flower |
| Description: Delicate lavender, cup-shaped flowers early spring. South Dakota's state flower. Available after 3/1. |
| Zone: 3 |
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PULSATILLA vulgaris
(pull-sah-TIL-lah) (vul-GARE-iss) | PULSVU3 |
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| Common Name: Pasque Flower |
| Description: RHS Award of Garden Merit. Violet-purple flowers in early spring. |
| Zone: 5 |
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PULSATILLA vulgaris 'Papageno'
(pull-sah-TIL-lah) (vul-GARE-iss) | PULSPG3 |
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| Common Name: Pasque Flower |
| Description: Fringed, semi-double flowers of pure white with cream tones and bright pink to dark reds and light blue to violet colors. |
| Zone: 5 |
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PULSATILLA vulgaris 'Rubra'
(pull-sah-TIL-lah) (vul-GARE-iss) | PULSVR3 |
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| Common Name: Pasque Flower |
| Description: Dark red-violet selection. |
| Zone: 5 |
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PYCNANTHEMUM muticum
(pik-nan-THE-mum) (mew-TEE-kum) | PYCNMU3 |
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| Common Name: Short-toothed Mountain Mint |
| Description: 2025 PPA Plant of the Year! Very fragrant, purple to lavender flowers in tufts arising from leaf axils. Attractive, silvery foliage. |
| Zone: 3 |
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PYCNANTHEMUM virginianum
(pik-nan-THE-mum) (ver-jin-ee-AY-num) | PYCNVI3 |
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| Common Name: Virginia Mountain Mint |
| Description: Fragrant, minty foliage; white or pale lavender flowers spotted purple on lower lip in July-September. Eastern U.S. native. |
| Zone: 3 |
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RATIBIDA columnifera 'Red'
(rah-TIB-ih-dah) (kol-um-NEE-fer-a) | RATICR3 |
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| Common Name: Mexican Hat |
| Description: Bushy plant; red, drooping petals around a central cone. |
| Zone: 4 |
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RATIBIDA columnifera 'Yellow'
(rah-TIB-ih-dah) (kol-um-NEE-fer-a) | RATICY3 |
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| Common Name: Upright Prairie Coneflower |
| Description: Yellow petals surround 2" cone. |
| Zone: 4 |
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RATIBIDA pinnata
(rah-TIB-ih-dah) (pin-NAY-ta) | RATIPI3 |
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| Common Name: Gray-headed Coneflower |
| Description: Bright yellow rays droop down around stalk. |
| Zone: 4 |
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ROSA Miniature Assortment
(RO-sa) | ROSAAS5 |
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| Common Name: |
| Description: Let us choose a good selection of colors, all labeled by variety. Some are no longer available individually.
Tiny-leaved, nearly continuously flowering, small bushes that can be trained to desired habit. |
| Zone: 5 |
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ROSULARIA chrysantha
(ros-uh-LAY-ree-a) (kris-ANTH-a) | ROSUCH3 |
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| Common Name: |
| Description: Small, ornamental rock garden plant that grows like Hen & Chicks. Yellow flowers. For sunny, dry location or rock garden. |
| Zone: 5 |
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ROSULARIA muratdaghensis
(ros-uh-LAY-ree-a) (mur-at-dag-EN-sis) | ROSUMU3 |
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| Common Name: |
| Description: Rosette-forming Sedum cousin is a fine addition providing texture in the rock garden or trough. Its rich, dark green clumps of rosettes give class to any well-drained, sunny planting. |
| Zone: 5 |
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ROSULARIA serpentinica
(ros-uh-LAY-ree-a) (ser-pen-TIN-ih-ka) | ROSUSR3 |
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| Common Name: |
| Description: Small rosettes resembling Hen & Chicks have bronze-red coloration. Dark green leaves that turn a dull red in summer. Native to Turkey. |
| Zone: 5 |
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RUDBECKIA (DENVER DAISY ™)
(rud-BEK-ee-ah) | RUDBDD3 |
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| Common Name: |
| Description: 2009 Plant Select®. Striking, dark eyed, long-rayed, golden daisy hybridized by Benary from native Rudbeckia hirta. This showy plant commemorates the 150th Anniversary of the founding of Denver. Short-lived; best treated as an annual. |
| Zone: 3 |
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RUDBECKIA 'American Gold Rush' PP#28,498
(rud-BEK-ee-ah) | RUDBAG5 |
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| Common Name: |
| Description: AAS Winner. This Rudbeckia is a heavy bloomer with shades of yellow flowers in mid-summer. Resistant to Septoria leaf spot. |
| Zone: 4 |
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RUDBECKIA fulgida 'Goldsturm'
(rud-BEK-ee-ah) (full-jih-dah) | RUDBGO1 |
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| Common Name: |
| Description: 1999 PPA Plant of the Year! RHS Award of Garden Merit. Large, deep yellow flowers with bronzy-black cone center. Forms nicely branched plants. Superior, hardy variety. |
| Zone: 3 |
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RUDBECKIA fulgida 'Goldsturm'
(rud-BEK-ee-ah) (full-jih-dah) | RUDBGO3 |
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| Common Name: |
| Description: 1999 PPA Plant of the Year! RHS Award of Garden Merit. Large, deep yellow flowers with bronzy-black cone center. Forms nicely branched plants. Superior, hardy variety. |
| Zone: 3 |
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RUDBECKIA fulgida 'Goldsturm'
(rud-BEK-ee-ah) (full-jih-dah) | RUDBGO5 |
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| Common Name: |
| Description: 1999 PPA Plant of the Year! RHS Award of Garden Merit. Large, deep yellow flowers with bronzy-black cone center. Forms nicely branched plants. Superior, hardy variety. |
| Zone: 3 |
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