yes. they do perish after becoming ripe.
A tender perennial is a perennial plant that is not hardy in cold climates.
Yes they are.
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.
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