Are they perennials?

Non-perennials (which basically are either annuals or the rare biennial) are plants that grow for one warm season, then die (or in the case of biennials, two warm seasons). Many vegetables and cheap...

Peennial flowers are plants that will come back each summer without being replanted.

Hardy.

Annuals complete their life cycles in one growing season. You plant them afresh every year or let them reseed themselves - the same plants generally won't come back the next year. Biennials are...

A perennial is a perennial no matter where it is grown.