| May 4, Pleasant Hill Road |
|---|
| American Dog Violet | Viola labradorica |
| |
| April 26, Middle Run Valley Natural Area |
|---|
| Kidney-leaved Buttercup | Ranunculus abortivus |
| Nodding Trillium | Trillium cernuum |
| Ill-scented Trillium | Trillium erectum |
| |
| April 25, Middle Run Valley Natural Area |
|---|
| Hooked Crowfoot | Ranunculus recurvatus |
| |
| April 24, Barley Mill Road |
|---|
| Herb-robert | Geranium robertianum |
| |
| April 24, Brackenville Road |
|---|
| Celandine Poppy | Stylophorum diphyllum |
| |
| April 20, Lewes |
|---|
| Beach Plum | Prunus maritima |
| |
| April 20, Cape Henlopen State Park |
|---|
| Highbush Blueberry | Vaccinium corymbosum |
| Black-berried Highbush Blueberry | Vaccinium fuscatum |
| |
| April 19, Cape Henlopen State Park |
|---|
| Carolina Pink | Silene caroliniana ssp. pensylvanica |
| Yellow Archangel | Lamiastrum galeobdolon |
| |
| April 9, Brandywine Creek State Park |
|---|
| Virginia Bluebells | Mertensia virginica |
| Trailing Arbutus | Epigaea repens |
| |
| March 29, Middle Run Valley Natural Area |
|---|
| Forsythia | Forsythia |
| Daffodil | Narcissus pseudonarcissus |
| |
| January 13, White Clay Creek State Park — Pump House Road |
|---|
| Jimson Weed | Datura stramonium |
| |
| September 17, White Clay Creek State Park — Thompson Station Road |
|---|
| Great Blue Lobelia | Lobelia siphilitica |
| |
| October 8, Pike Creek Road |
|---|
| Swamp Milkweed | Asclepias incarnata ssp. pulchra |