Zone 4

Ajuga reptans 'Binblasca'

Black Scallop Bugleweed

Ajuga reptans 'Valfredda'

Chocolate Chip Bugleweed

Allium 'Medusa'

Medusa Ornamental Onion

Allium 'Millenium'

Millenium Ornamental Onion

Aster nov-ang. 'Purple Dome'

Purple Dome New England Aster

Astilbe chinensis 'Pumila'

Pumila Chinese Astilbe

Astilbe chinensis 'Visions'

Visions Chinese Astilbe, False Goat's Beard

Baptisia australis

Blue False Indigo

Clematis 'The President'

The President Clematis

Cotinus coggygria 'Royal Purple'

Royal Purple Smoke Tree

Echinacea purpurea 'Magnus'

Magnus Echinacea, Coneflower

Echinacea purpurea 'PAS702917'

PowWow® Wild Berry Echinacea, Coneflower

Echinacea x 'Cheyenne Spirit'

Cheyenne Spirit Echinacea, Coneflower

Eutrochium maculatum 'Gateway'

Gateway Joe Pye Weed

Heuchera micrantha 'Palace Purple'

Purple Palace Coral Bells

Heuchera x 'Midnight Rose'

Midnight Rose Coral Bells

Heuchera x 'TNHEUFP'

Forever® Purple Coral Bells

Hosta 'Blue Mouse Ears'

Blue Mouse Ears Hosta

Hosta 'Fire and Ice'

Fire and Ice Hosta

Hosta 'First Frost'

First Frost Hosta