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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PONTEDERIA cordata
(pon-te-DER-ee-a) (kor-DAH-ta) | PONTCO5 |
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| Common Name: Blue Pickerel Plant |
| Description: RHS Award of Garden Merit. Important pond plant with shiny, dark green, cordate leaves topped with large spikes of bright blue flowers in summer. H to 2' at water's edge. Available after 5/1. |
| Zone: 4 |
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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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POTENTILLA thurberi 'Monarch's Velvet'
(poe-ten-TIL-lah) (THUR-ber-eye) | POTEMV3 |
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| Common Name: Cinquefoil, Five Finger |
| Description: Raspberry-red flowers with velvet-red centers June-August. |
| Zone: 4 |
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POTENTILLA x tonguei
(poe-ten-TIL-lah) | POTETO3 |
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| Common Name: Cinquefoil, Five Finger |
| Description: RHS Award of Garden Merit. Good rock garden and ground cover variety. Large, apricot flowers with crimson centers. |
| Zone: 4 |
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PRIMULA 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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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 vulgaris Grandiflora Mix
(PRIM-yew-la) (vul-GARE-iss) | PRIMGM3 |
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| Common Name: English Primrose |
| Description: Large flowers, wide color range. |
| 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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PRUNELLA Grandiflora Mix
(pru-NELL-a) (gran-di-FLOOR-ah) | PRUNGM3 |
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| Common Name: Self Heal |
| Description: Dense, matted ground cover. Flowers may be violet, rose, or white. |
| Zone: 5 |
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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 'Diana Clare'
(pul-mon-AIR-ee-a) (long-ee-FO-lee-a) | PULMDC8 |
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| Common Name: Lungwort |
| Description: Violet-blue flowers over large, silver-sheened, apple-green leaves that are wider than other longifolias. Vigorous, multi-crowned plants with long-lasting foliage. |
| 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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PULMONARIA longifolia 'Roy Davidson'
(pul-mon-AIR-ee-a) (long-ee-FO-lee-a) | PULMRD8 |
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| Common Name: Lungwort |
| Description: Sky-blue flowers April-May; dark green leaves with silvery spotting. |
| Zone: 3 |
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PULSATILLA grandis
(pull-sah-TIL-lah) (GRAN-dis) | PULSGR3 |
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| Common Name: Pasque Flower |
| Description: Largest Pasque flower with 3", lilac-pink flowers. |
| Zone: 5 |
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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 'Alba'
(pull-sah-TIL-lah) (vul-GARE-iss) | PULSVA3 |
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| Common Name: Pasque Flower |
| Description: RHS Award of Garden Merit. White flowering selection; flower stalks to 15". |
| Zone: 5 |
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PULSATILLA vulgaris Heiler Hybrids
(pull-sah-TIL-lah) (vul-GARE-iss) | PULSHH3 |
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| Common Name: Pasque Flower |
| Description: From dark red to bright red, pink, violet, blue, cream, and pure white flowers. |
| 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 flexuosum
(pik-nan-THE-mum) (fleks-yoo-OH-sum) | PYCNFL3 |
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| Common Name: Slender-leaved Mountain Mint |
| Description: Large, dense clusters of small, white flowers with a pleasant, sweet mint scent. Aromatic, glossy, narrow, green leaves. Great Plains native. |
| Zone: 4 |
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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: 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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RANUNCULUS repens
(rah-NUN-kew-lus) (RE-penz) | RANURE3 |
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| Common Name: Creeping Buttercup |
| Description: Golden yellow, 1", single flowers in spring and summer on this vigorous ground cover. |
| Zone: 4 |
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