Erigeron philadelphicus L.
Delicate, hairy perennial. Before opening the flower buds droop. The flowers are then upright — when open — but close at night. Flowers are white, pale pink or bluish with a yellow centre. Spreads by rhizomes; may become weedy.
3,000,000 seeds/pound; starts from seed, container.
Floodplains, fields, roadsides, stream banks, and wet meadows.
Forage for livestock; deer like it too.
Attracts bees, butterflies, and moths.
The plant's odour is reputed to repel fleas, hence the name.