The butterfly lily is invasive to the Monteverde forest. It was introduced from Southern Asia, but it was populated and kept reproducing. It now covers the forest and the lowlands of the Monteverde Cloud Reserve, and is a resource for lily butterflies.
The Golden toad has declined because of population destruction in the lowlands of the cloud reserve. Very few golden toads have been seen since 1989 because of a construction project to build a bridge during the 90's.