| Common Name |
Scientific Name |
Bloom time* |
Photo
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| *Bloom time: For flowering plants, the approximate time for first blooms; for other plants - when first fully formed or in leaf. Some plants bloom for long periods. " Spring" = April to May 31; "Early Summer" = June 1 to July 15; "Late Summer" = July 16 to August 31; "Autumn" = Sept. 1 to Oct. 31. ## Photo: Photos not the property of the Friends are credited on the photo reference sheet at the bottom of this page. |
Links on the name are to a page of photos and plant information. |
| Botanical classification: Over the last several years Botanists have reclassified many plants from previous classifications. In some cases consolidating species and varieties and in some cases reclassifying to a different genus. We use the USDA Plants Database which in early 2010 completed a major update of these botanical classifications; The Comprehensively Annotated Checklist of the Flora of Minnesota, version 2010.3 and the 2009 Garden Census. Reference books in print will not reflect these recent updates until revised editions are published. While many plants may be known by a previous botanical name and, in many cases by a variety of common names, we have updated the listings on this website to the newest nomenclature. |
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| Tall Bellflower (American Bellflower) |
Campanulastrum americananum (L.) Small |
Late Summer |
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| Tall Buttercup |
Ranunculus acris L. |
Late Spring to Early Summer |
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| Tall Meadow Rue (Purple Meadow Rue) |
Thalictrum dasycarpum Fisch & Ave-Lall. |
Early to Late Summer |
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| Tall Thimbleweed |
Anemone Virginiana L. |
Early Spring to Early Summer |
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| Talus Slope Penstemon -see- Foxglove Beardtongue |
Penstemon digitalis Nutt. ex Sims |
Late Spring to Early summer |
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| Tamarack (Larch) |
Larix laricina (Du Roi) K. Koch |
Mid-spring Leaf Gowth |
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| Tatarian Honeysuckle |
Lonicera tatarica L. |
Spring |
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| Thimbleberry (Flowering Raspberry) |
Rubus parviflorus Nutt. |
Early Summer |
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| Thimbleweed |
Anemone cylindrica L. |
Late Spring to Early Summer |
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| Thin-leaved Coneflower |
Rudbeckia triloba L. |
Late Summer to Autumn |
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| Threepetal Bedstraw |
Galium trifidum L. |
Early to Late Summer |
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| Toadflax, Bastard |
Comandra umbellata (L.) Nutt. |
Late Spring to Early Summer |
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| Toadshade (Sessile Trillium) |
Trillium sessile L. |
Spring |
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| Trailing Wild Bean (Amberique Bean) |
Strophostyles helvola (L.) Elliott |
Mid - late Summer |
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| True Forget-me-not |
Myosotis scorpioides L. |
Early Spring to Autumn |
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| Tufted Loosestrife (Swamp Loosestrife) |
Lysimachia thyrsiflora L. |
Late Spring to Early Summer |
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| Turk's-cap Lily |
Lilium superbum L. |
Early to Late Summer |
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| Turtlehead (White Turtlehead) |
Chelone glabra L. |
Late Summer to Autumn |
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| Twinleaf |
Jeffersonia diphylla (L.) Pers. |
Spring |
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| Two-leaved Toothwort (Crinkleroot) |
Cardamine diphylla (Michx.) Alph. Wood |
Spring |
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| Veiny Pea |
Lathyrus venosus Muhl. ex Willd. |
Late Spring - Early Summer |
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| Virgin's Bower |
Clematis virginiana L. |
Early Summer to Early Autumn |
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| Virginia Bluebells |
Mertensia virginica (L.) Pers. ex Link |
Spring |
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| Virginia Mountain Mint |
Pycnanthemum virginianum (L.) T. Dur. & B.D.Jackson ex B.L. Robins & Fernald. |
Early Summer - Late Summer |
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| Virginia Stickseed (Beggar's Lice) |
Hackelia virginiana (L.) I. M. Johnst. |
Late Summer to Autumn |
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| Virginia Waterleaf |
Hydrophyllum virginianum L. |
Spring to Early Summer |
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| Wahoo (Eastern Wahoo) |
Euonymus atropurpurea Jacq. var. atropurpurea |
Late Spring |
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| Water Arum -see- Wild Calla below |
Calla palustris L |
Spring |
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| Water Horehound |
Lycopus americanus Muhl. ex W.P.C. Barton |
Early to Late Summer |
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| Water Horsetail |
Equisetum fluviatile L. |
Late Spring to Early Summer |
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| Western Silver Aster (Silky Aster) |
Symphyotrichum sericeum (Vent.) G.L. Nesom |
Late Summer to Autumn |
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| White Arrowleaf Aster |
Symphyotrichum urophyllum (Lindl.) G.L. Nesom |
Late Summer to Autumn |
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| White Avens |
Geum canadense Jacq. |
Early Summer |
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| White Baneberry |
Actaea pachypoda Elliot |
Spring to Early Summer |
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| White False Indigo |
Baptisia alba (L) Vent. var. macrophylla |
Early Summer |
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| White Heath Aster |
Symphyotrichum ericoides (L.) G.L. Nesom |
Late Summer to Autumn |
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| White Panicle Aster |
Symphyotrichum lanceolatum var. lanceolatum (Willd.) Nesom |
Late Summer to Autumn |
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| White Prairie Clover |
Dalea candida Michx. ex Willd |
Early to Late Summer |
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| White Rattlesnake Root |
Prenanthes alba L. |
Late Summer to Autumn |
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| White Sagebrush (Prairie Sage) |
Artemisia ludoviciana Nutt. |
Late summer to Autumn |
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| White Snakeroot |
Ageratina altissima L. |
Late Summer to Early Autumn |
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| White Sweet Clover |
Melilotus alba Medikus |
Early to Late Summer |
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| White Trillium -see- Large-flowered Trillium |
Trillium grandiflorum (Michx) Salisb. |
Spring |
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| White Trout-lily (White Fawn lily) |
Erythronium albidum Nutt. |
Spring |
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| White Vervain |
Verbena urticifolia L. |
Early Summer |
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| White Wood Aster |
Eurybia divaricata (L.) G. L. Nesom |
Late summer to Autumn |
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| Wholeleaf Rosinweed |
Silphium integrifolium Michx. |
Early to Late Summer |
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| Whorled Loosestrife |
Lysimachia quadrifolia L. |
Early to Late Summer |
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| Whorled Milkweed |
Asclepias verticillata L. |
Early Summer to Late Summer |
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| Wild Bean see: Groundnut |
Apios americana Medik. |
Late Summer to Early Autumn |
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| Wild Bergamont |
Monarda fistulosa L. |
Late Summer to Early Autumn |
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| Wild Black Currant (American Black Currant) |
Ribes americanum Mill. |
Spring |
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| Wild Blue Indigo: See False Blue Indigo |
Baptisia australis (L.) R. Br. |
Late Spring to Early Summer |
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| Wild Blue Phlox |
Phlox divaricata L. |
Spring to Early Summer |
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| Wild White Indigo: See White False Indigo above |
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| Wild Calla (Water Arum) |
Calla palustris L. |
Spring |
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| Wild Columbine |
Aquilegia canadensis L. |
Spring to Late Summer |
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| Wild Cucumber (not extant) |
Echinocystis lobata (Michx.) Torr. & A. Gray |
Late Summer |
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| Wild Four O-Clock: See Heartleaf Four O'clock |
Mirabilis nyctaginea (Michx.) MacMill. |
Early Summer |
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| Wild Garlic |
Allium canadense L. |
Early to Late summer |
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| Wild Geranium (Spotted Geranium) |
Geranium maculatum L. |
Spring to Early Summer |
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| Wild Ginger (Canadian Wild Ginger) |
Asarum canadense L. |
Spring to Early Summer |
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| Wild Leek (Ramp) |
Allium tricoccum Sol. |
Early Summer |
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| Wild Lettuce |
Lactuca canadensis L. |
Early Summer to Autumn |
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| Wild Mint |
Mentha arvensis L. var. canadensis |
Early Summer to Late Summer |
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| Wild Oats (Sissileleaf Bellwort) |
Uvularia sessilifolia L. |
Spring |
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| Wild Onion (Autumn Onion) |
Allium stellatum Fraser ex Ker Gawl. |
Late Summer to Early Autumn |
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| Wild Plum |
Prunus americana Marsh. |
Late Spring |
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| Wild Poinsettia |
Euphorbia cyathophora Murray |
Late Summer to Autumn |
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| Wild Quinine |
Parthenium integrifolium L. |
Early Summer |
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| Wild Red Raspberry |
Rubus idaeus L. |
Early Summer flower, late summer fruit |
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| Wild Roses |
Rosa - Six separate species |
Early Summer to late Summer |
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| Canadian Wild Rhy Grass |
Elymus canadensis L. |
Mid-summer to Autumn |
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| Wild Sarsaparilla |
Aralia nudicaulis L. |
Late Spring to Early Summer |
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| Wild Yamroot |
Dioscorea villosa L. |
Early to Late Summer |
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| Willowherb |
Epilobium coloratum Biehler |
Early Summer to Autumn |
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| Winterberry |
Ilex verticillata (L.) A. Gray |
Early Summer |
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| Wintergreen (Eastern Teaberry) |
Gaultheria procumbens L. |
Late Summer |
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| Witch Hazel |
Hamamelis virginiana L. |
Autumn, late, sometimes after the Garden closes |
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| Witch's Moneybags -see- Live Forever |
Hylotelephium telephium (L.) H. Ohba. |
Late Summer to Early Autumn |
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| Wolfberry |
Symphoricarpos occidentalis Hook. |
Late Spring to Early Summer |
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| Wood Anemone |
Anemone quinquefolia L. |
Spring |
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| Wood Lily |
Lilium philadelphicum L. |
Early Summer |
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| Wood Nettle (Canadian Wood Nettle) |
Laportea canadensis (L.) Weddell |
Early to Late Summer |
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| Wood Poppy (Celandine Poppy) |
Stylophorum diphyllum (Michx.) Nutt. |
Spring |
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| Woods' Rose -to Wild Roses |
Rosa woodsii Lindl. |
Early summer to late summer |
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| Woodland Strawberry |
Fragaria vesca L. |
Spring to Early Summer |
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| Woodland Sunflower: |
Helianthus divaricatus L. |
Late Summer to Early Autumn |
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| Yarrow |
Achillea millefolium L. |
Early to Late Summer |
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| Yellow Day Lily |
Hemerocallis lilioasphodelus L. |
Late Spring to Early Summer |
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| Yellow Flag Iris (Paleyellow Iris) |
Iris pseudacorus L. |
Early Summer |
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| Yellow Goatsbeard |
Tragopogon pratensis L. [Old - Tragopogon lamottei Rouy] |
Late Spring to Early Summer |
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| Yellow Hawkweed: See Canadian Hawkweed |
Hieracium canadense var. canadense Michx. |
Late Summer to Autumn |
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| Yellow Lady's-slipper (greater) |
Cypripedium parviflorum Salisb. var. pubescens (Willd.) Knight |
Late Spring, usually last half of May |
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| Yellow Lady's-slipper (lesser) Historical Garden Plant - not extant. |
Cypripedium parviflorum Salisb. var. makasin |
Late Spring, usually last half of May |
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| Yellow Sedge (Pennsylvania Sedge) |
Carex pensylvanica Lam. |
Spring |
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| Yellow Sweet Clover |
Meliotus officinalis (L.) Lam. |
Early to Late Summer |
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| Yellow Trillium (Yellow Wakerobin) |
Trillium luteum (Muhl.) Harbison |
Spring |
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| Yellow Trout-lily (Dog-tooth Violet) |
Erythronium americanum Ker Gawl. |
Spring |
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Yellow Violet -see: (Downy Yellow Violet) |
Viola pubescens Aiton |
Spring |
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| Yellow Wakerobin - see- Yellow Trillium above |
Trillium luteum (Muhl.) Harbison |
Spring |
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| Yellow Wood Sorrel |
Oxalis dilenii Jacq. |
Early to Late Summer |
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| Zigzag Goldenrod |
Solidago flexicaulis L. |
Late Summer to Autumn |
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##Photo Credit Information |