Answer: Double impatiens plants are typically sold as premium annuals in the spring; you might check with directly suppliers in your area to see if they expect to stock them this year.
For example, the Simply Beautiful line includes double impatiens and offers a zip code locator for locating retailers.
If you prefer to start them yourself, seed retailers such as Thompson Morgan offer them by mail -- currently in their catalog at
and the Burpee catalog shows both seeds and plants for the Rose Parade series of double impatiens.
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