Compassplant (Silphium laciniatum)
Description of Compassplant (Silphium laciniatum)
Compassplant (Silphium laciniatum), a member of the Asteraceae (Aster Family), is a herbaceous perennial that grows from 1′ to 10′ tall and blooms with yellow flowers in the summer to early fall (July to September). This plant grows in places with full sun that have dry circumneutral well-drained soils, but can handle moist soil and is hardy in zones 3-8. More information on this species can be found on this blog post.
This species hosts the Bordered Patch Butterfly (Chlosyne lacinia) in the western part of its range and the silphius borer moth (Papaipema silphii), throughout.
This species is a nectar source to other butterflies, skippers, bees, and wasps during the growing season. Birds, such as goldfinch, like to eat the seeds in the fall.
This rosinweed grows in open areas such as prairies, meadows, sandstone glades, dolomitic glades and other calcareous soils.
Range of Compassplant (Silphium laciniatum) in the United States and Canada
Compassplant is native to the mid-western, south-central, and parts of the eastern United States.
Origin of the Name
The genus name, Silphium, is derived from the Greek word that originated from a resin-bearing plant (Missouri Botanical Garden). The species name, laciniatum, is Latin for cut leaves (Missouri Botanical Garden).