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Perennials

 
Acanthus hungaricus

Acanthus hungaricus

Hungarian Bear's Breeches

Acanthus mollis

Acanthus mollis

Bear's Breeches

Achillea millefolium

Achillea millefolium

Common Yarrow

Acinos alpinus

Acinos alpinus

Alpine Rock Thyme

Actaea pachypoda

Actaea pachypoda

White Baneberry

Actaea rubra

Actaea rubra

Red Baneberry

Agastache foeniculum

Agastache foeniculum

Anise Hyssop

Ajuga reptans

Ajuga reptans

Common Bugleweed

Ajuga reptans 'Rosea'

Ajuga reptans 'Rosea'

Pink Bugleweed

Alchemilla erythropoda

Alchemilla erythropoda

Dwarf Lady's Mantle

Alchemilla mollis

Alchemilla mollis

Lady's Mantle

Alisma plantago-aquatica

Alisma plantago-aquatica

Broadleaf Water Plantain

Allium cernuum

Allium cernuum

Nodding Onion

Allium christophii

Allium christophii

Star of Persia

Allium giganteum

Allium giganteum

Ornamental Onion

Allium karataviense

Allium karataviense

Ornamental Onion

Allium schoenoprasum 'Forescate'

Allium schoenoprasum 'Forescate'

Giant-flowered Chives

Allium x 'Millenium'

Allium x 'Millenium'

Ornamental Onion

Allium x 'Mount Everest'

Allium x 'Mount Everest'

Ornamental Onion

Amsonia ciliata 'Spring Sky'

Amsonia ciliata 'Spring Sky'

Spring Sky Blue Star

Amsonia hubrichtii

Amsonia hubrichtii

Arkansas Blue Star

Amsonia tabernaemontana

Amsonia tabernaemontana

Willow Amsonia

Anacyclus depressus

Anacyclus depressus

Mount Atlas Daisy

Anaphalis margaritacea

Anaphalis margaritacea

Pearly Everlasting

Anemone canadensis

Anemone canadensis

Canada Anemone

Anemone sylvestris

Anemone sylvestris

Snowdrop Windflower

Angelica gigas

Angelica gigas

Korean Angelica

Aquilegia alpina

Aquilegia alpina

Alpine Columbine

Aquilegia canadensis

Aquilegia canadensis

Wild Columbine

Aquilegia canadensis 'Corbett'

Aquilegia canadensis 'Corbett'

Golden Wild Columbine

Aquilegia x 'Green Apples'

Aquilegia x 'Green Apples'

Clematis-flowered Columbine

Arabis caucasica 'Rosea'

Arabis caucasica 'Rosea'

Rose Rock Cress

Arenaria montana

Arenaria montana

Mountain Sandwort

Arisaema consanguineum

Arisaema consanguineum

Himalayan Jack-in-the-pulpit

Arisaema griffithii

Arisaema griffithii

Griffith's Cobra Lily

Arisaema triphyllum

Arisaema triphyllum

Jack-in-the-Pulpit

Armeria juniperifolia

Armeria juniperifolia

Juniper-leaved Thrift

Armeria maritima 'Rubrifolia'

Armeria maritima 'Rubrifolia'

Red-leaved Sea Thrift

Artemisia dracunculus

Artemisia dracunculus

French Tarragon

Artemisia ludoviciana

Artemisia ludoviciana

Silver Sagebrush

Artemisia x 'Powis Castle'

Artemisia x 'Powis Castle'

Powis Castle Artemisia

Aruncus aethusifolius

Aruncus aethusifolius

Dwarf Goat's Beard

Aruncus dioicus

Aruncus dioicus

Goat's Beard

Aruncus dioicus 'Kneiffii'

Aruncus dioicus 'Kneiffii'

Cutleaf Goat's Beard

Asarum canadense

Asarum canadense

Wild Ginger

Asarum europaeum

Asarum europaeum

European Ginger

Asarum splendens

Asarum splendens

Showy Ginger

Asclepias incarnata

Asclepias incarnata

Swamp Milkweed

Asclepias syriaca

Asclepias syriaca

Common Milkweed

Asclepias tuberosa

Asclepias tuberosa

Butterfly Milkweed

Asclepias verticillata

Asclepias verticillata

Whorled Milkweed

Asphodeline lutea

Asphodeline lutea

King's Spear

Aster cordifolius

Aster cordifolius

Heart-leaved Aster

Aster divaricatus

Aster divaricatus

White Wood Aster

Aster ericoides

Aster ericoides

Heath Aster

Aster laevis

Aster laevis

Smooth Aster

Aster novae-angliae

Aster novae-angliae

New England Aster

Aster novi-belgii

Aster novi-belgii

New York Aster

Aster novi-belgii 'Alert'

Aster novi-belgii 'Alert'

Michaelmas Daisy

Aster oolentangiensis

Aster oolentangiensis

Sky Blue Aster

Aster puniceus

Aster puniceus

Swamp Aster

Aster umbellatus

Aster umbellatus

Flat-topped Aster, Parasol Whitetop

Aster x KICKIN® Lilac Blue ('07-49-4')

Aster x KICKIN® Lilac Blue ('07-49-4')

KICKIN® Lilac Blue Aster

Asteromea mongolica

Asteromea mongolica

Japanese Aster

Astilbe chinensis 'Pumila'

Astilbe chinensis 'Pumila'

Dwarf False Spirea

Astilbe chinensis var. taquetii 'Superba'

Astilbe chinensis var. taquetii 'Superba'

Fall Astilbe, Chinese Astilbe

Astilboides tabularis

Astilboides tabularis

Shieldleaf Rodgersia

Astrantia major

Astrantia major

Masterwort

Astrantia major 'Ruby Wedding'

Astrantia major 'Ruby Wedding'

Hattie's Pincushion