Ratibida columnifera 'Red' is a Mexican hat plant with blooms of deep red and yellow that appear to float above feathery foliage.

Ratibida columnifera 'Red Midget' has highly saturated blooms of deep red and yellow that appear to float on airy, feathery foliage.

Rheum alexandrae is a rare species of rhubarb from the mountains of China and Tibet with heart-shaped leaves and yellow flowers.

Rhododendron campanulatum subsp. aeruginosum 'Blue Ox' has foliage emerging powder blue on tight mounds 2 feet tall and wide.

Rhododendron camtschaticum is a dwarf rhodo with delicate, bright lavender-pink to magenta flowers.

Rhododendron makinoi has funneled, bell-shaped, pink to off-white flowers, sometimes spotted crimson and narrow, lance-shaped leaves.

Rhododendron oreotrephes is a floriferous rhododendron with bluish leaves that smell of warm spices with notes of cinnamon and pine.

Rhodoendron sinogrande has the largest leaves of any rhododendron which can be three feet long and one foot wide.

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

Rhododendron 'Bubblegum' has larger flowers than it’s predecessor and makes a terrific show.

Rhododendron 'Cody' has frilly-edged pink flowers, pale yellow overlaid with moderate purplish pink at edges.

'Everred' is a stunning Rhododendron with burgundy leaves and rich, red flowers.

Rhododendron 'Florence Parks' produces abundant whorls of attractive deep purple flowers.

Rhododendron 'Holden's Solar Flair' has medium-large, creamy-yellow flowers, with showy red marks in the throat.