Cultivar

Flower Color

Time of
Bloom

Height and Width
in approx. 4 yrs

Foliage

Winter

Foliage

Comments

Robber Knight *

lavender

Aug-Sept

upright 16” x 22”

soft yellow downy

red tints

new

Robert

Chapman * +

lavender

Aug-Oct

upright 12" x 25"

gold to orange

red thru spring

recommended

Roland

Haagen * +

mauve

Aug-Sept

6" x 14"

gold

bright orange
has darker tips

recommended

Romina *

purplish red bud bloomer

Aug-Nov

broad erect

16” x 20”

very dark green hairy

Roodkapje *

lilac buds

Sept-Nov

spreading 18” x 24”

dark green

reddish tinge

sport of ‘Underwoodii’

Rosalind

Underwood’s *

lavender

Sept-Oct

upright 12” x 22”

yellow green

yellow tip

some variegated branches

Ross Hutton *

beetroot

July-Sept

upright 10" x 14"

medium green

very dark

flowers

Roswitha *

deep lilac red buds

Sept-Jan

broad upright 

16" x 22"

dark green

holds buds into winter

Roter Oktober *

crimson

Sept-Nov

upright 16” x 16”

dark green

good late bloomer

Rotfuchs *

lilac pink

Aug-Oct

vigorous 18” x 24”

green tipped red to orange

Ruby Slinger *

white

Aug-Oct

upright 10” x 14”

bright

yellow spring tips

outstanding in spring