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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)
March 13 / May 1
Snow Trillium
Snow Trillium (Trillium nivale)
March 22 / April 22
Bloodroot (Sanguinaria canadensis)
March 31 / April 28
Hepatica (Anemone acutiloba)
March 27 / April 27
Pasque Flower
Pasque Flower (Anemone patens) This plant is historical - not extant. April 3 / April 30
False Rue Anenome
False Rue Anemone (Enemion biternatum)
March 24 / May 4
Canada Violet
Canada Violet (Viola canadensis)
April 12 / May 10
White Trout Lily
White Troutlily (Erythronium albidum)
April 7 / May 2
Dutchman's Breeches
Dutchman’s Breeches (Dicentra cucullaria)
April 13 / May 6

Mid Spring Bloomers

Large Flowered Bellwort
Large Flowered Bellwort (Uvularia grandiflora)
April 15 / May 7
Cut-leaved Toothwort
Cut-leaved Toothwort (Cardamine concatenata)
April 9 / May 11
Large flowered Trillium
Large Flowered Trillium (Trillium grandiflorum)
April 10 / May 22
Marsh Marigold
Marsh Marigold (Caltha palustris)
April 16 / May 7
Spring Beauty
Spring Beauty (Claytonia virginica)
April 16 / May 11
Prairie Smoke
Prairie Smoke / Purple Avens (Geum triflorum)
April 16 / May 11
Jack in the Pulpit
Jack-in-the-pulpit (Arisaema triphyllum)
April 22 / May 15
Virginia Bluebells
Virginia Bluebells (Mertensia virginica)
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)
April 30 / June 2
Wild Geranium
Wild Geranium (Geranium maculatum)
May 2 / May 30
Columbine (Aquilegia canadensis)
May 8 / May 24
Golden Alexanders
Golden Alexanders (Zizia aurea) May 10 / May 30
Wild Lupine
Lupine (Lupinus perennis)
May 15 / May 28
Spiderwort (Tradescantia ohiensis)
May 22 / June 7
Showy Lady's-slipper
Showy Lady’s-slipper (Cypripedium reginae)
May 24 / June 28