Ranunculus 'Buttered Popcorn'

Buttercup

Size : 10"

Hardiness : Zone 4

Growth Habit : Ground cover.

Evergreen with snowflake-shaped leaves.

 

Ranunculus yakusimanus

Buttercup

Size : 1-4"

Hardiness :

Growth Habit : Long blooming. Tiny flowers over mat-like foliage.

Yellow flowers, silver veined foliage. Fertile, moist, well-drained soil. Great in a rock garden.

 

Raoulia australis (Hookeri)

Hookeri

Size : 1/2" Tall, 3' Wide

Hardiness : Zone 6

Growth Habit : Tiny leaves form ground hugging cushions. Rooting stems.

Produces yellow flowerheads. Good drainage essential.

 

DR

Rhazha orientalis

Blue Star

Size : 15-20"

Hardiness : Zones 5-7

Growth Habit : Upright.

Bright blue flowers in June - Asian counterpart of Amsonia.

 

Rheum palmatum 'Atrosanguineum'

Ornamental Rhubarb

Size : 5 1/2' - 6'

Hardiness : Zones 4-6

Growth Habit : Open, upright.

Blooms May-June, followed with fruit. Red-brown seed stalks give rise to deep cherry red flowers.

 

Rhodohypoxis platypetala 'Lily Jean'

Lily Jean

Size : 3-6"

Hardiness : Zone 6

Growth Habit : Tender bulbous alpine, star-shaped flowers.

Plenty of moisture in spring. Double pink flowers.

 

Rhodohypoxis platypetala 'Pink'

Pink

Size : 3-6"

Hardiness : Zone 6

Growth Habit : Tender bulbous alpine with star-shaped flowers.

Pink flowers. Plenty of moisture in spring.

 

Rhodohypoxis platypetala 'Red'

Red

Size : 3-6"

Hardiness : Zone 6

Growth Habit : Tender bulbous alpine, with star-shaped flowers.

Plenty of moisture. Red flowers.

Rodgersia aesculifolia

Fingerleaf Rodgers Flower

Size : 4'

Hardiness : Zones 5-7

Growth Habit : Clump-forming.

The leaves have densely woolly, red-brown stalks and veins. Striking in appearance once established. Ideal for pond side plantings. Bears many Ivory to pinkish star shaped flower spikes mid-summer.

 

Rodgersia pinnata 'Elegans'

Rodger's Flower

Size : 40"

Hardiness :

Growth Habit : Clump-forming.

Perfect accent for shade or pond side gardens. Bold!! Pink flowers with dark green, glossy foliage.

 

Rosmarinus offic. prostratus 'Baby P.J.'

Rosemary 'Baby PJ'

Size : 4-8"

Hardiness : Zone 8

Growth Habit : Tiny, tight leaves.

Blue flowers. Great container plant. Tiniest form of Rosemary available.

 

Rosmarinus officinalis 'Hill Hardy'

Rosemary

Size : 1-2'

Hardiness : Zone 6

Growth Habit : Aromatic herb.

Improved hardiness.

 

Rosularia chrysantha

Hens & Chicks

Size: 1-2”

Hardiness: Zone 5
Growth Habit: Low-growing, succulent groundcover.

Sempervivum relative. Tight, green, small, velvety rosettes that pile up in a mound. Needs well-drained soil. Tolerant of infertile and sandy soils . Cream flowers.

    

DR

Rubus ‘Betty Ashburner'

Creeping Rasberry

Size: 12-15”

Hardiness: Zone 6
Growth Habit: Robust groundcover.

Glossy leaves that are larger than creeping raspberry. Blooms May and June.

Rubus calycinoides

Size : 6" Tall, 12" Wide

Hardiness : Zones 6-9

Growth Habit : Quilt textured groundcover.

White flowers with amber fruits in spring - turns vivid red in fall. Nearly evergreen, insect and pest free.

 

          

DR

Rubus cockburnianus ‘Golden Vale'

Golden Rasberry

Size: 4'

Hardiness: Zone 4
Growth Habit: Arching shrub.

Striking, all gold, deciduous foliage. White stems add winter interest to the garden.

       

N

Rudbeckia fuldiga ‘Goldstrum'

Black Eyed Susan

Size: 3-4'

Hardiness: Zones 5-7
Growth Habit: Upright, mounded.

No explanation needed for this ever-popular Black Eyed Susan. It's a long bloomer. Variety ‘Speciosa' is more compact at 2'. Both bloom almost all summer.

Rudbeckia ful. var. sull. 'Goldstrum'

Black-Eyed Susan

Size : 40-48"

Hardiness : Zones 3-8

Growth Habit : Upright.

Blooms late summer into autumn. Most popular Black-eyed Susan. Large, golden yellow flowerheads 3.5-5", over vigorous, bushy plants.

 

   

N

Rudbeckia fulgida var. fulgida

Brown-eyed Susan

Size: 2 - 2 ½'

Hardiness: Zones 5-7
Growth Habit: Lax, open, mounded.

Shiny, deep green foliage. Smaller and finer than above. Much longer flowering, from mid-July through mid-October. Flowers have a surreal, vinyl quality that reminds us of those plastic furniture covers. Only downside is deer enjoy it, too.

 

 

Rudbeckia hirta 'Toto'

Coneflower

Size: 10”
Hardiness: Zones 3-7
Growth Habit: Dwarf and compact.

Good plant for containers or the front of a border. Daisy-like flower heads that are pale to golden yellow with conical centers of deep brown to purple.

Rudbeckia laciniata 'Golden Glow'

Coneflower

Size : 6-7'

Hardiness :

Growth Habit : Upright.

Double gold flowers.

 

   

N

Rudbeckia maxima

Coneflower

Size : 6-8'

Hardiness : Zones 3-8

Growth Habit : Upright, erect.

Traditional yellow cone flowers that bloom in July. Large glaucous blue leaves - good accent plant. A big, bold, bodacious plant.

 

Rudbeckia nitida 'Herbstsonne'

Coneflower

Size : 5-8'

Hardiness :

Growth Habit : Upright.

Glossy, green, deep cut foliage. Loose clusters of flowers. Blooms mid-late summer. Very showy. Bright golden yellow daisies.

 

   N

Ruellia humilis

Wild Petunia

Size: 2-3'

Hardiness: Zones 4-8
Growth Habit: Open, lax, upright.

Great plant for dry, rocky, shallow soils, and prefers a sandy loam mix. The lovely violet wild flower blooms July-August. Excellent when planted with shorter grasses and flowers. Great for a dry prairie garden.

Ruschia pulvinaris

South African Mesembs

Size : 6-10"

Hardiness :

Growth Habit : Small, rounded sub-shrub.

Unusual rock garden/trough plant. Silvery blue succulent leaves.

 

Ruta graveolens 'Blue Beauty'

Rue

Size : 12-18"

Hardiness : Zone 5

Growth Habit : Lacy foliage.

Does well in dry, gravely soil. Be careful of the milky sap! Blue foliage, yellow flowers. Decorative and aromatic.