Assertion: delphinium | /r/HasProperty | very winter-hardy plant
Facets:
Source sentences:
text: Delphinium-a very winter-hardy plant, it is able to withstand frosts to -40°C.
text: Delphiniums are a hardy herbaceous perennial, which means they are tolerant of our winters hardy down to H5, (explanation of frost hardy.)
text: Delphinium-a very winter-hardy plant, it is able to withstand the cold.