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 campylogynum 'Celsum Pink' offers deep pink outward to nodding bells and small shiny foliage.

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

Rhodoendron catawbiense 'Royal Resilience' has glowing lavender-pink flowers and great disease resistance.

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 'Bloombux' is a dwarf evergreen shrub with soft pink flowers and glossy green leaves.

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

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

Rhododendron 'Capistrano' has large, pastel-yellow flowers with frilly edges and muted, deep green foliage.