Rosy Maidenhair
Adiantum hispidulum
Indoor or greenhouse plant. To 1 ft. tall. Young fronds rosy brown, turning medium green as they matur...
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Royal Beard Tongue
Penstemon spectabilis
Native to Southern California. To 3–4 1/2 ft. tall and wide,with smooth green or grayish leaves ...
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Royal Fern
Osmunda regalis
To 6 ft. tall, 3 ft. wide; each frond segment is quite large. Fertile segments are smaller, clustered ...
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Royal Palm
Roystonea
Stately, symmetrical feather palms. Tall, smooth gray trunk is marked with rings and topped by a green...
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Royal Palm
Roystonea regia
Nataive to Cuba. Grows 50 to 75 ft. high, 30 ft. wide. Trunk is swollen at base, tapering toward top, ...
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Royal Poinciana
Delonix regia
This native of Madagascar, which Hawaiians call ohai’ula, is as flamboyant as it is shapely. Its...
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Rubber Tree
Ficus elastica
Native to India andMalaysia. In Hawaii, it is a wide-spreading tree 60–80 ft. tall (up to 100 ft. in d...
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Rue
Ruta graveolens
Native to southern Europe, this herb grows 2 to 3 ft. high and wide, with aromatic, ferny-looking blue...
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Rush
Juncus
Rushes somewhat resemble grasses, with leaflike, cylindrical stems and tiny, inconspicuous flowers clu...
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Russian Olive
Elaeagnus angustifolia
Native from Europe to Asia. To 20 ft. high and wide, but can be clipped to make a medium-height hedge....
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Russian Sage
Perovskia
Native to western and central Asia. Woody-based clump with many grayish white, upright-growing stems c...
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RUSSIAN SAGE
Perovskia atriplicifolia
This popular plant is neither a sage nor from Russia. It is anairy-looking but tough plantnative to Af...
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