Answer: Monrovia plants are carried nation wide by independent retailers. They each stock their own selection of plants, so you would need to check directly with them to see what they might have available. There is a zip code based dealer locator at the Monrovia web site to help with contact information.
You may find that larger retailers in the Frederick, MD or Washington DC area, for example, routinely have a wider selection of plants. If that is not workable for you, you could check with some mail order sources. Some that may carry these might include the following.
(These are listed in no particular order.)
Best of luck with your search!
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