Answer: I know it's disappointing when you can't find exactly the plant you want, but nursery stock is seasonal - most garden centers don't want to keep plants over the winter months because of the maintenance costs involved. The good news is that spring arrivals are typically in early March, which is a terrific time to plant. You might ask your local nursery to reserve the plants you're interested in and make sure they are on their spring order form.
Best wishes with your landscape!
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