It has soft, fuzzy leaves.
aeray is correct - Mullein. It grows well in much of the Western U.S. but is not native here. Used medicinally to help the lungs. The dried flower stalk has been used as a torch after dipping in oil. Seeds can be purchased but I usually find some around. Mullein flowers the second year of life and then dies.
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Definitely common mullein, Verbascum thapsus, useful medicinally and as emergency T.P. (but a bit itchy, sometimes, after the fact). en.wikipedia.org/wiki/Verbascum_thapsus
Last time I tried this I was WAY off, so. What climate? What part of the country? What time of the year? What kind of soil? Wild or maybe planted last year? How long to get this high?
I'd go with aeray's answer.
Take a leaf and the pictures to your local nursery. Home Depot or Lowes may be able to help too.