Answer: Sweet peas will climb nearly anything with an open framework.You can even make a teepee of several poles lashed together and then add a bit of chicken wire around the base to get them started upward. Tall narrow trellis towers intended for roses will work, as will "obelisk" shaped trellis or a flat decorative panel such as that on p. 116 of the 1999 Burpee catalog. (www.burpee.com or 800-888-1447). A quick internet search for "trellis" will yield numerous additional sources for mailorder.
There is one caveat about using sweet peas in the center of a garden, however. You may find that they turn brown and shrivel away as soon as the weather turns hot during the summer.
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