They are pollinated by bees and the Long-tailed Skipper (Urbanus proteus).

The Long-tailed Skipper (Urbanus proteus) is a spread-winged skipper butterfly found throughout tropical and subtropical South America, south to Argentina and north into the southern part of the United States of America.

The plant is apparently very attractive to white-tailed deer and eastern cottontails, which consume the herbage, and it plays host to many butterfly species, including Long-tailed Skipper (Urbanus proteus) and Southern Cloudywing (Thorybes bathyllus).