perennial list: A-B

Ajuga-Carpet Bugleweed Ajuga reptans

8/18 in. 15/45 cm.

Sun or shade

Purple and
bronze

Purple.

May to June.
Zone 3.
Moist.

Ajuga-Geneva Bugleweed Ajuga genevensis

12/18 in. 20/45 cm.

Sun or shade

Green

Purple.

May to June.
Zone 3. Moist.

Allium-Onion Ornamental Allium species

12/12 in. 30/30 cm.

Sun.

Green.

Pink.

June to July.
Zone 2.
Well-drained

Alyssum-Basket of Gold Alyssum montanum Alyssum (aurinia) saxatilis

8/24 in. 20/60 cm.

Sun or part shade.

Silver.

Yellow.

May to June.
Zone 3.
Well-drained.

Anemone-Pasque Flower Anemone pulsatilla.

12/12 in. 30/30 cm.

Sun or shade.

Green.

Purple, red.

April to May. Zone 2. Well-drained.

Anemone-Snowdrop Anemone sylvestris

18/24 in. 45/60 cm.

Sun or shade.

Green

White

May to June.
Zone 2. Well-drained.

Antennaria-Pussy Toes Antennaria dioica

6/12 in. 15/30 cm.

Sun.

Silvery.

Pink

May to June.
Zone 1. Well-drained.

Anthemis-Marguerite Anthemis sancti-johannis Anthemis tinctoria

18/36 in. 45/90 cm.

Sun.

Green.

Yellow Orange.

June to August.
Zone 2. Well-drained.

Arabis-Wallcress Arabis arendsii Arabis caucasica Arabis ferdinandi-coburgi

8/24 in. 20/60 cm.

Sun.

Green.

Red.
Pink.
White.

May to June.
Zone 3. Well-drained.

Armeria-Large Thrift Armeria pseudarmeria

24/12 in. 60/30 cm.

Sun.

Green

White.
Red.

June to August.
Zone 2. Well-drained.

Armeria-Thrift Armeria juniperifolia Armeria maritima 'Alba' Armeria 'Dusseldorf Pride'

6/12 in. 15/30 cm.

Sun.

Green.

Pink.
Red.
White.

May to July
Zone 3. Well-drained.

Artemisia-Silver Brocade Artemisia stelleriana

12/30 in. 30/75 cm.

Sun.

Silver.

Zone 2. Well-drained.

Artemesia-Silver King Artemisia ludoviciana

36/30 in. 90/75 cm.

Sun.

Silver.

Zone 2. Well-drained.

Artemisia-Silver Mound Artemisia schmidtiana

12/18 in. 30/45 cm.

Sun.

Silver.

Zone 2. Well-drained.

Aster-Alpine Aster alpinus

12/12 in. 30/30 cm.

Sun

Green.

Pink.
Purple.

May to June.
Zone 2. Well-drained.

Aster-Fall Aster-novae-angliae Aster novi-belgi

48/36 in. 120/90 cm.

Sun.

Green.

Red.
Pink.
Purple.

August to Sept.
Zone 3.
Well-drained.

Astilbe-False Spirea Astilbe arendsii Astilbe chinensis Astilbe simplicifolia Astilbe taquetii

36/30 in. 90/75 cm.

Part shade.

Green.

White. Peach. Purple.
Pink.
Red.

June to August
Zone 3.
Moist.

Astrantia-Masterwort Astrantia species

24/18 in. 60/45 cm.

part shade.

Green.

Pink,
red,
white.

June to August. Zone 4. Moist.

Aubretia-Rockcress Aubretia cultorum/deltoidea

6/24 in. 15/60 cm.

sun

Gray/
green

Pink,
red,
purple.

May to June.
Zone 4
Well-drained

Baby's Breath Gypsophilia paniculata

36/24 in. 90/60 cm.

Sun or shade.

Green.

White,
pink.

June to July
Zone 2. Well-drained.

Baby's Breath-Creeping Gypsophilia repens

6/24 in. 15/60 cm.

Sun or shade.

Green.

White,
pink.

June to July. Zone 2 Well-drained.

Baby's Breath-Lavender Gypsophilia pacifica

36/24 in. 90/60 cm.

Sun or shade.

Green.

Lavender

June to July.
Zone 3. Well-drained.

Bachelor's Button Centaurea montana

24/24 in. 61/61 cm.

Sun.

Gray/
green

Bluish-purple.

June to August.
Zone 2. Well-drained.

Balloon Flower Platycodon grandiflorus

30/24 in. 75/60 cm.

Sun or shade.

Green.

Purple/
white.

June to August. Zone 3. Well-drained.

Barrenwort Epimedium x rubrum

12/12 in. 30/30 cm.

Shade

Bronzy green.

Yellow pink.

May to June.
Zone 4. Moist.

Bee Balm Bergamot Monarda didyma

36/18 in. 90/45 cm.

Sun.

Green.

Purple, pink,
red.

June to July
Zone 3. Moist.

Bells-Canterbury Campanula medium

36/12 in. 90/30 cm.

Sun or shade.

Green.

Purple, white.

May to July. Zone 2. Well-drained.

Bellflower- Carpathian Campanula carpatica

9/12 in. 20/30 cm.

Sun or Shade.

Green.

Purple, white

May to June.
Zone 2. Well-drained.

Bellflower-Clustered Campanula glomerata

24/24 in. 61/61 cm.

Sun or shade.

Green.

Purple.

June to July.
Zone 2.

Bellflower-Fairy Thimble Campanula cochlearifolia

4/12 in. 10/30 cm.

Sun or shade.

green

purple

June to August. Zone 2. Well-drained.

Bellflower-Olympian Campanula 'Olympica'

12/12 in. 30/30 cm.

Sun or Shade.

Green.

Lavender

June to August.
Zone 2. Well-drained.

Bellflower-Peachleaf Campanula persicifolia

36/18 in. 90/45 cm.

Sun or shade.

Green.

Purple.

June to August. Zone 2. Well-drained.

Bellflower-Serbian Campanula poscharskyana

6/18 in. 15/45 cm.

Sun or shade.

green

purple

May to June. Zone 2. Well-drained.

Bergenia-Heartleaf Bergenia cordifolia

18/24 in. 45/60 cm.

Sun or shade.

green

pink

June to July. Zone 2. Moist.

Bleeding Heart-Fernleaf Dicentra exima

18/12 in. 45/30 cm.

Part shade.

Green.

White,
red.

June to Sept.
Zone 3. Well-drained.

Bleeding Heart Dicentra spectablis

36/24 in. 90/60 cm.

Part shade.

Green

Pink, white.

May to white.
Zone 2. Well-drained.

Blue-eyed Grass Sisyrinchium bellum

6/8 in. 15/20 cm.

Sun

Green.

Bluish-violet.

May to June.
Zone 4. Well-drained.

Bog Rosemary Andromeda polifolia

6/12 in. 15/30 cm.

Sun or shade

Gray/
green.

Light
pink.

May to June.
Zone 3. Moist.

Bunchberry Cornus canadensis

6/8 in. 15/20 cm.

Part shade.

Green.

White.

May to June.
Zone 2.
Moist.