Plant Search » List of Botanically Intriguing Plants
Rheum alexandrae is a rare species of rhubarb from the mountains of China and Tibet with heart-shaped leaves and yellow flowers.
Rheum palmatum is an ornamental rhubarb with huge leaves, often flushed with red beneath.
Ornamental rhubarb with large, spade-shaped foliage emerging red-flushed later with green tops and bold red undersides.
Rhipsalis cereuscula is a fascinating, epiphytic cactus with light-green stems that have a striking resemblance to rice grains.
Rhododendron campanulatum subsp. aeruginosum 'Blue Ox' has foliage emerging powder blue on tight mounds 2 feet tall and wide.
Rhodoendron sinogrande has the largest leaves of any rhododendron which can be three feet long and one foot wide.
Roscoea alpina is a cool ginger relative with orchid-like magenta flowers.
Roscoea ‘Brown Peacock' has orchid-like, lavender flowers on top of purple-brown stalks with clasping green leaves that are red-flushed beneath.
Roscoea purpurea 'Cinnamon Stick' has blood red stems that ascend to bronzed leaves and large, orchid-like lavender flowers.
Roscoea ‘Spice Island' has lavender purple, orchid-like flowers on top of deep red stalks with clasping green leaves with red-flushed undersides in mid summer.
Rudbeckia occidentalis 'Green Wizard' is for esoteric gardeners who like odd plants, especially those without petals!