Ranunculus aconitifolius 'Flore Pleno' has delicate, double pom poms in masses and a lovely common name: fair maids of France.

Ranunculus Amandine 'White' is an improved Persian buttercup on strong stems with large pure white flowers.

Ranunculus Aviv White is a Persian buttercup with creamy white flowers.

Rheum palmatum is an ornamental rhubarb with huge leaves, often flushed with red beneath.

Rhipsalis cereuscula is a fascinating, epiphytic cactus with light-green stems that have a striking resemblance to rice grains.

Rhododendron 'Boule de Neige" midseason flowers are pure white.

Large clumps of bold, strong, palmate foliage with great surface texture makes a great shady focal point.

Rodgersia 'Bloody Wheels' has stunning foliage that emerges bright, boisterous red deepening to bronze with sharply serrated edges.

Romneya coulteri or Matilija poppy has incredible crepe-paper thin, pure white petals w/ large yellow centres atop bluish foliage! It's awesome...

Rosa 'Claire Austin' is a David Austin shrub or climbing rose with creamy white blooms with strong myrrh fragrance. Part shade tolerant.

Rosa 'Desdemona' is a David Austin rose that open to pure white blooms after an early pink flush with strong fragrance.

Rosa 'Desdemona' is a David Austin rose that open to pure white blooms after an early pink flush with strong fragrance.

Rosa 'Fair Bianca' is a David Austin shrub rose bearing white deeply cupped blooms with strong myrrh fragrance.

Rosa Lichfield Angel' is a David Austin rose shrub with creamy-peach rosettes and light musk fragrance. Zone 4 hardy!

Rosa 'Rose-Marie' is a David Austin rose shrub with white-cream rosettes and strong myrrh fragrance.

Rosa 'Susan William-Ellis' is a David Austin shrub rose bearing pure white blooms and medium-strong myrrh fragrance.

Rosa 'Tranquility' is a David Austin shrub rose bearing pure white rosettes with strong old rose fragrance.

Rosa 'Tranquility' is a David Austin shrub rose bearing pure white rosettes with strong old rose fragrance.

Rosa 'Winchester Cathedral' is a David Austin shrub rose bearing pure white blooms and medium fragrance.

Rosa 'Wollerton Old Hall' is a David Austin climbing rose bearing pale apricot blooms with strong myrrh fragrance.

Rosa 'Full Sail' is a hybrid tea rose bearing very large white blooms with intense fragrance.

Rosa 'Full Sail' is a hybrid tea rose bearing very large white blooms with intense fragrance.

Rosa 'Iceberg' is a floribunda rose bearing pure white, lightly fragrant blooms.