PLATYCODON grandiflorus 'Hakone Double Blue'
(plat-ee-KO-don) | PLATHD5 |
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| Common Name: Balloon Flower |
| Description: Rich, violet-blue, double bells. Selection from Japan. |
| Zone: 4 |
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PLATYCODON grandiflorus 'Mariesii'
(plat-ee-KO-don) (gran-di-FLOOR-us) | PLATMA3 |
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| Common Name: Balloon Flower |
| Description: RHS Award of Garden Merit. Large, rich blue bells. |
| Zone: 4 |
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PLATYCODON grandiflorus 'Sentimental Blue'
(plat-ee-KO-don) | PLATSB5 |
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| Common Name: Balloon Flower |
| Description: F1 Hybrid dwarf bred for use as a pot plant. Blooms first year with many intense blue flowers. |
| Zone: 4 |
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PLATYCODON grandiflorus 'Sentimental Blue'
(plat-ee-KO-don) (gran-di-FLOOR-us) | PLATSB3 |
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| Common Name: Balloon Flower |
| Description: F1 Hybrid dwarf bred for use as a pot plant; blooms first year. Many, intense blue flowers. |
| Zone: 4 |
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PLECTRANTHUS argentatus
(plek-TRAN-thus) (ar-jen-TAY-tus) | PLECAR3 |
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| Common Name: Silver Dollar Plant |
| Description: 1999 Plant Select®. RHS Award of Garden Merit. Attractive, silvery coleus relative. Use as an annual for texture and contrast. |
| Zone: 8 |
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PLECTRANTHUS madagascariensis 'Variegatus'
(plek-TRAN-thus) (mad-a-gas-KAR-ee-en-sis) | PLECMV3 |
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| Common Name: Variegated Mintleaf |
| Description: Attractive, fragrant, trailing foliage for baskets or as container skirt plant. |
| Zone: 10 |
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PODOPHYLLUM peltatum
(poe-doe-FIL-lum) (pel-TAY-tum) | PODOPE5 |
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| Common Name: Mayapple |
| Description: One, great lobed leaf; creamy, nodding flowers; yellow fruit, occassionly red. Native; goes dormant early. Spring only. |
| Zone: 4 |
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POLEMONIUM caeruleum 'Blue Pearl'
(pole-MONE-ee-um) (sir-EW-lee-um) | POLEBP3 |
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| Common Name: Jacob's Ladder, Greek Valerian |
| Description: Bright blue flowers. Kieft Seed variety from Holland. |
| Zone: 3 |
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POLEMONIUM reptans
(pole-MONE-ee-um) (REP-tanz) | POLERE3 |
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| Common Name: Jacob's Ladder, Greek Valerian |
| Description: China-blue bells; native. |
| Zone: 3 |
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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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POLEMONIUM yezoense 'Purple Rain Strain'
(pole-MONE-ee-um)(yez-oh-ENSE) | POLEPR5 |
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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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PORTULACARIA afra decumbent
(por-tew-LAH-kar-ee-a) (AF-ra) | PORTAF3 |
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| Common Name: |
| Description: Low, mounding form of miniature jade. Excellent in containers and the landscape. |
| Zone: 10 |
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PORTULACARIA afra 'Medio Picta'
(por-tew-LAH-kar-ee-a) | PORTMP3 |
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| Common Name: Midstripe Rainbow Shrub |
| Description: Ovate, green leaves variegated with a white stripe down the middle. Attractive plant with its showy pink to red stems. Slow grower. Filtered sunlight. |
| Zone: 9 |
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PORTULACARIA afra 'Red Stem'
(por-tew-LAH-kar-ee-a) (AF-ra) | PORTRS4 |
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| Common Name: |
| Description: Attractive, dark red stems on miniature jade plant. Excellent as indoor bonsai. |
| Zone: 10 |
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POTENTILLA nepalensis 'Ron McBeath'
(poe-ten-TIL-lah) | POTERM5 |
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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 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 denticulata Mix
(PRIM-yew-la)(den-tik-yew-LAH-ta) | PRIMDM5 |
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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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PSEUDERANTHEMUM carruthersii var. atropurpureum
(soo-der-RANTH-ee-mum) (kar-RUH-ther-see-eye) | PSEUAT4 |
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| Common Name: |
| Description: Large, glossy, deep purple leaves (color of ripe eggplant) on upright stems. Spectacular, rare Pseuderanthemum formerly seen in conservatories, now becoming popular for that 'tropical look' in the landscape and in containers. |
| Zone: 10 |
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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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