Plume Poppy
Macleaya cordata
To 7 to 8 ft. tall and 3 ft.wide, with grayish green, 10-in. leaves. White to beige flowers. Considere...
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Poinsettia
Euphorbia pulcherrima
From Mexico. Leggy plant to 10 ft. or taller, 6 ft. wide. Coarse leaves grow on stiffly upright canes....
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Point Reyes Ceanothus
Ceanothus gloriosus
From 1–1 1/2 ft. high,12–16 ft. wide. Dark green, oval, 1-in. leaves; tough and spiny. Flowers are typ...
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Polyantha rose
Rosa (Polyantha)
Polyanthas produce small blossoms in large sprays; they are compact bushes, generally not much more th...
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Polyanthus Primrose
Primula polyanthus
Grows 8-12 in. high, 9 in. wide. Fresh green, tongue shaped to 8 in. long leaves; resemble romaine let...
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Ponderosa Pine
Pinus ponderosa
Native from British Columbia to Mexico and east to Nebraska, Texas, and northeast Oklahoma. Moderateto...
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Poor Man’s Orchid
Schizanthus pinnatus
Chilean native to 1/2 ft. high, 1 ft. wide. Profuse, small, orchid-like flowers in pink, rose, lilac, ...
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Poplar
Populus
Fast-growing, tough trees. Grown primarily and especially appreciated in interior regions with hot sum...
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Poppy
Papaver
Poppies provide gay spring and summer color for borders, containers, and bouquets. Give ordinary, well...
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Poppy Mallow
Callirhoe involucrata
Native from Missouri to Wyoming, south to Texas. Thick, fleshy root produces a spreading plant 6 in. t...
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Poppy-Flowered Anemone
Anemone coronaria
Grows from a tuber. Species is rarely seen in gardens; it has been replaced by showy large-flowered hy...
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Porcelain Berry
Ampelopsis brevipedunculata
From Asia. Rampant woody vine climbs 20 to 30 ft. by stem tendrils. Large, handsome, three-lobed, 2 1/...
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