Leafy spurge was introduced from Eurasia. In the northern Midwest and Northwest it is a very troublesome weed. In Connecticut, it is considered potentially invasive.
- Family: spurge (Euphorbiaceae)
- Habitat: roadsides, dry fields
- Height: 8-36 inches
- Flower size: actual flowers less than 1/8 inch across; flowers backed by two or three conspicuous yellow-green bracts 3/4 inch across
- Flower color: brownish
- Flowering time: May to September
- Origin: Europe and Asia
Cypress spurge (Euphorbia cyparissias) is a related plant with similar flowers, but much narrower leaves. Cypress spurge was also introduced from Eurasia.