knockout roses in planter box

I have window boxes that I would love to have 'Knock Out' roses in. The boxes are only 6 or 7 inches deep. Do you think the roses would work in them? They are in part shade (mostly sun). If not roses, can you suggest something that would work there, something trailing perhaps and also something with some height so it could be seen out the window? I use pansies and snapdragons in winter.
Submitted by BHGPhotoContest

I don't think 'Knock Out' roses would do well in such a shallow window box. If you want to grow them, you would be better off planting in individual deep containers where they should be fine. You might be able to grow small miniature roses such as 'Rainbow's End' in the window box. Other suggestions for the window box would be tender perennials, often listed as annuaks, such as hybrid fan flower (Scaevola), verbenas such as the Superbena? series, petunias, calibrachoa, and Marguerite daisies (Argyranthemum). There are many new and exciting tender perennials on the market today so mix and match for a long-blooming and colorful display.  


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