Käyttäjän mertensia havainnot

Per an employee, these appear spontaneously and are a major greenhouse weed where they grow orchids. I asked if any have spread outside and they said it wouldn’t be hardy, but I think it would and it’s only a matter of time. I also know someone that used to work there that admitted to trying to hybridize native species with whichever entity of the S. sinensis complex they have here.