Answer: An annual plant grows to maturity, flowers, sets seeds and dies in one year. Biennial plants take two years to complete their growth cycle, producing flowers and seeds on the second year and only fliage the first year. Perennial plants live and flower from the same roots year after year; dieing back to the ground each fall. You are in zone 9, which is characterized as having mild winters and a long growing season. Many of your perennials will not dieback to the ground and some plants termed annuals in catalogs will overwinter for you. You should be able to plant seedling outside now.
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