Gustavus Adolphus College

The following is a guide to the flowers planted in the formal gardens of the Linnaeus Arboretum.

Key to species accounts:

Species name: common name with scientific (Latin) name in parentheses followed by cultivar name (if known); "L." following scientific name designates a species named by Linnaeus circa. 1760 A.D.

1. Period of blooming
2. Endurance in hardiness zone 4 (i.e. perennial, annual, or biennial)
3. Gardens where planted
   • BBG = Bird and Butterfly Garden
   • EYG = Evelyn Young Gardens
   • TG = Thornberg Garden
   • THG = Thompson Herb Garden

*All photos taken at Gustavus by Bob Dunlap, Arboretum Naturalist unless otherwise noted.

Yarrow (Achillea millefolium ‘Moonshine’) L.

• Blooms June – October
• Perennial
• Gardens: THG

Yarrow (Achillea millefolium) L.

• Blooms June – October
• Perennial
• Gardens: EYG, TG

Anise Hyssop (Agastache foeniculum x rugosa ‘Blue Fortune’)

• Blooms June – August
• Perennial
• Gardens: EYG, THG

Hollyhock (Alcea rosea ‘Peaches ‘N Dreams’) L.

• Blooms June – September
• Biennial
• Gardens: BBG

Hollyhock (Alcea rosea ‘Maroon’) L.

• Blooms June – September
• Biennial
• Gardens: BBG

Garlic Chives (Allium tuberosum)

• Blooms August – September
• Perennial
• Gardens: THG

Columbine (Aquilegia vulgaris ‘Clementine’) L.

• Blooms May – July
• Perennial
• Gardens: BBG

Rock Cress (Arabis caucasica ‘Variegata’)

• Blooms April – May
• Perennial
• Gardens: EYG

Silver Brocade Artemisia (Artemisia stelleriana)

• Blooms August – October
• Perennial
• Gardens: EYG

Wild Ginger (Asarum canadense) L.

• Blooms April – May
• Perennial
• Gardens: THG

Swamp Milkweed (Asclepias incarnata) L.

• Blooms June – August
• Perennial
• Gardens: BBG, THG

Butterfly Weed (Asclepias tuberosa) L.

• Blooms June – August
• Perennial
• Gardens: BBG, EYG

New York Aster or Michaelmas Daisy (Aster dumosus ‘Wood’s Pink’) L.

• Blooms August – September
• Perennial
• Gardens: BBG

New England Aster (Aster novae-angliae) L.

• Blooms September – October
• Perennial
• Gardens: BBG, TG, THG

New England Aster (Aster novae-angliae ‘Alma Potschke’) L.

• Blooms September – October
• Perennial
• Gardens: BBG

False Indigo (Baptisia x variicolor ‘Twilite Prairieblues’)

• Blooms May – July
• Perennial
• Gardens: EYG

Japanese Barberry (Berberis thunbergii ‘Atropurpurea Nana’)

• Blooms May – June
• Perennial
• Gardens: EYG

Heartleaf Bergenia (Bergenia cordifolia ‘Perfect’)

• Blooms May – June
• Perennial
• Gardens: EYG

Butterfly Bush (Buddleia davidii ‘Black Knight’)

• Blooms July – September
• Annual
• Gardens: BBG

Feather Reed Grass (Calamagrostis arundinacea ‘Karl Foerster’)

• Blooms May – October
• Perennial
• Gardens: EYG

Variegated Canna (Canna pretoria)

• Blooms July – September
• Annual
• Gardens: EYG

Wallflower (Cheiranthus ‘Bowles Mauve’)

• Blooms July – September
• Perennial
• Gardens: EYG

Stiff Tickseed (Coreopsis palmata)

• Blooms June – August
• Perennial
• Gardens: EYG

Tickseed (Coreopsis lanceolata ‘Early Sunrise’) L.

• Blooms June – August
• Perennial
• Gardens: EYG

Dahlia (Dahlia ‘Mystic Illusion’)

• Blooms July – October
• Annual
• Gardens: EYG, TG

Delphinium (Delphinium ‘Belladonna’) L.

• Blooms July – September
• Perennial
• Gardens: TG

Delphinium (Delphinium elatum ‘Pure White Magic Fountains’) L.

• Blooms July – September
• Perennial
• Gardens: BBG

Delphinium (Delphinium grandiflorum ‘Blue Butterfly’) L.

• Blooms July – September
• Perennial
• Gardens: TG

Foxglove (Digitalis purpurea ‘Alba’) L.

• Blooms July – September
• Perennial
• Gardens: TG

Foxglove (Digitalis ‘Camelot Rose’) L.

• Blooms July – September
• Perennial
• Gardens: THG

Purple Coneflower (Echinacea purpurea)

• Blooms June – September
• Perennial
• Gardens: EYG

Purple Coneflower (Echinacea purpurea ‘Bright Star’)

• Blooms June – September
• Perennial
• Gardens: TG

Purple Coneflower (Echinacea purpurea ‘Magnus’)

• Blooms June – September
• Perennial
• Gardens: BBG

Purple Coneflower (Echinacea purpurea ‘Sunrise’)

• Blooms June – September
• Perennial
• Gardens: TG

Globe Thistle (Echinops ‘Taplow Blue’) L.

• Blooms June – August
• Perennial
• Gardens: EYG

Joe-pye Weed (Eupatorium purpureum ‘Gateway’) L.

• Blooms August – September
• Perennial
• Gardens: BBG, EYG

Queen of the Prairie or Meadowsweet (Filipendula rubra ‘Venusta Magniticum’)

• Blooms June – July
• Perennial
• Gardens: EYG

Blanketflower (Gaillardia x grandiflora ‘Goblin’)

• Blooms June – September
• Perennial
• Gardens: THG

Oxeye (Heliopsis helianthoides ‘Summer Sun’)

• Blooms May – July
• Perennial
• Gardens: EYG

Daylily (Hemerocallis ‘Stella d’Oro’) L.

• Blooms June – October
• Perennial
• Gardens: EYG, TG

Daylily (Hemerocallis hybrids) L.

• Blooms July – September
• Perennial
• Gardens: EYG, TG

Coralbells (Heuchera micrantha ‘Palace Purple’)

• Blooms July – September
• Perennial
• Gardens: EYG, TG

Kyushu Hydrangea Tree (Hydrangea paniculata ‘Kyushu’) L.

• Blooms June – August
• Perennial
• Gardens: EYG

Hydrangea (Hydrangea paniculata ‘Limelight’) L.

• Blooms June – August
• Perennial
• Gardens: TG

Orris Root (Iris pallida ‘Variegata’)

• Blooms May – June
• Perennial
• Gardens: EYG, TG

Siberian Iris (Iris sibirica ‘Silver Illusion’) L.

• Blooms May – June
• Perennial
• Gardens: EYG

Common Lantana (Lantana camara) L.

• Blooms May – October
• Annual
• Gardens: EYG, THG

Gayfeather (Liatris spicata ‘Floristan Violet’)

• Blooms July – August
• Perennial
• Gardens: TG

Oriental Lily (Lilium hybrids) L.

• Blooms May – July
• Perennial
• Gardens: EYG

Sea Lavender (Limonium latifolium)

• Blooms August – September
• Perennial
• Gardens: TG

Maltese Cross (Lychnis chalcedonica) L.

• Blooms July – September
• Perennial
• Gardens: EYG

Creeping Jenny or Moneywort (Lysimachia nummularia) L.

• Blooms July – August
• Perennial
• Gardens: EYG

Silver Feather Miscanthus (Miscanthus sinensis ‘Silberfeder’)

• Blooms July – October
• Perennial
• Gardens: TG

Variegated Maiden Grass (Miscanthus sinensis ‘Variegatus’)

• Blooms July – October
• Perennial
• Gardens: EYG

Scarlet Bee Balm (Monarda didyma) L.

• Blooms June – September
• Perennial
• Gardens: BBG

Catnip (Nepeta cataria ‘Walker’s Low’) L.

• Blooms July – October
• Perennial
• Gardens: THG

Switch Grass (Panicum virgatum ‘Heavy Metal’) L.

• Blooms September – October
• Perennial
• Gardens: EYG

Egyptian Star Cluster (Pentas lanceolata)

• Blooms June – September
• Annual
• Gardens: THG

Russian Sage (Perovskia atriplicifolia ‘Longin’)

• Blooms July – October
• Perennial
• Gardens: EYG, TG

Phlox (Phlox subulata ‘Fort Hill’) L.

• Blooms May – June
• Perennial
• Gardens: BBG

Rosemary (Rosmarinus officinalis) L.

• Blooms June – July
• Perennial
• Gardens: THG

Black-eyed Susan (Rudbeckia fulgida ‘Goldsturm’)

• Blooms June – September
• Perennial
• Gardens: BBG

Scarlet Sage (Salvia coccinea)

• Blooms August – September
• Annual
• Gardens: TG

Blue Sage (Salvia guaranitica)

• Blooms August – September
• Annual
• Gardens: THG

Meadow Sage (Salvia sylvestris ‘Mainacht’) L.

• Blooms July – September
• Perennial
• Gardens: EYG, TG

Variegated Stonecrop (Sedum kamtschaticum ‘Variegatum’)

• Blooms July – August
• Perennial
• Gardens: EYG

Matrona Stonecrop (Sedum spectabile ‘Matrona’)

• Blooms August – October
• Perennial
• Gardens: BBG

Red Carpet Stonecrop (Sedum spurium ‘Red Carpet’)

• Blooms June – August
• Perennial
• Gardens: EYG

Autumn Joy Sedum (Sedum telephium)

• Blooms August – October
• Perennial
• Gardens: EYG

Autumn Stonecrop (Sedum ‘Purple Emperor’)

• Blooms August – October
• Perennial
• Gardens: TG

Goldflame Spirea (Spirea bumalda ‘Goldflame’)

• Blooms May – August
• Perennial
• Gardens: EYG

Speedwell (Veronica spicata ‘Giles Van Hees’) L.

• Blooms June – August
• Perennial
• Gardens: BBG, EYG

Adam’s Needle (Yucca filamentosa) L.

• Blooms May – July
• Perennial
• Gardens: EYG