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25 Common Spring Flowers

Early and Late Bloom Dates - Eloise Butler Wildflower Garden


Beginning in 1958, Gardener Ken Avery kept a record of the bloom dates for plants in the Garden. Succeeding him, Cary George did likewise. Based on their records here are the earliest and latest bloom dates for 25 common spring flowers. Only 3 of these had an earlier date in Cary George's time - all in 1981. Certain dates may have been different in Martha Crone's time but she did not keep such records continuously, but where she did note a date that was earlier or later, I have inserted that date. These dates give you a picture of how variable the spring can be from year-to-year. The link on the plant name takes to to an information sheet about the plant. Download Printable thumbnail version (PDF). Here is a link to Ken Avery's data. (PDF)

Earliest Spring Bloomers

Skunk Cabbage
Skunk Cabbage (Symplocarpus foetidus (L.) Salisb
March 13 / April 19
Snow Trillium
Snow Trillium (Trillium nivale Riddell)
March 26 / April 22
Bloodroot
Bloodroot (Sanguinaria canadensis L.)
March 31 / April 28
Hepatica
Hepatica (Anemone acutiloba (DC))
March 27 / April 24
Pasque Flower
Pasque Flower (Anemone patens L.)
April 3 / April 30
False Rue Anenome
False Rue Anemone (Enemion biternatum Raf. )
March 24 / May 4
Canada Violet
Canada Violet (Viola canadensis L.)
April 12 / May 10
White Trout Lily
White Trout Lily (Erythronium albidum Nutt.)
April 7 / May 2
Dutchman's Breeches
Dutchman’s Breeches (Dicentra cucullaria (L.) Bernh.)
April 13 / May 6

Mid Spring Bloomers

Large Flowered Bellwort
Large Flowered Bellwort (Uvularia grandiflora Sm.)
April 15 / May 7
Cut-leaved Toothwort
Cut-leaved Toothwort (Cardamine concatenata Michx.)
April 9 / May 11
Large flowered Trillium
Large Flowered Trillium (Trillium grandiflorum (Michx) Salisb.)
April 16 / May 22
Marsh Marigold
Marsh Marigold (Caltha palustris L.)
April 16 / May 7
Spring Beauty
Spring Beauty (Claytonia virginica L.)
April 16 / May 11
Prairie Smoke
Prairie Smoke / Purple Avens (Geum triflorum Pursh)
April 16 / May 11
Jack in the Pulpit
Jack-in-the-pulpit (Arisaema triphyllum (L.) Schott)
April 22 / May 15
Virginia Bluebells
Virginia Bluebells (Mertensia virginica (L.) Pers.)
April 24 / May 11
Bird's foot violet
Bird’s Foot Violet (Viola pedata)
Photo ©Merle R. Black, Wisconsin Flora.
April 28 / May 23

Later Spring Bloomers

Wild Calla
Wild Calla (Calla palustris L.)
April 30 / June 2
Wild Geranium
Wild Geranium (Geranium maculatum L.)
May 2 / May 30
Columbine
Columbine (Aquilegia canadensis L.)
May 8 / May 24
Golden Alexanders
Golden Alexanders (Zizia aurea (L.) W.D.J. Koch) May 10 / May 30
Wild Lupine
Lupine (Lupinus perennis L. )
May 15 / May 28
Spiderwort
Spiderwort (Tradescantia ohiensis Raf.)
May 22 / June 7
Showy Lady's-slipper
Showy Lady’s-slipper (Cypripedium reginae Walter)
May 24 / June 18