I found a plant in my back yard what is it ?

It is tall big leaves (not a weed)

Answers:
Smoke it and if you get a buzz..it's pot!

Other answers:
Maybe it's the beginning of an oak tree!
Maybe it's the beginning of an oak tree!
You would have to describe it in fine detail for any to guess the name I hope you can find someone with pictures to find a match and a name for your plant. Do you have a library nearby? They can help you.
A better descrption would be needed. How big? shape, color, texture and veining of the leaves. Is the stem woody or soft tissue? Where do you live, this will help rule out plants that won't tolerate your climate.
My guess would a small Royal Paulownia tree. I have them growing wild on my property. It is native to the Orient. It is also called the Chinese Empress tree, the Princess tree, or the Kiri tree. Paulownia is known for its extremely fast growth, clusters of showy and fragrant lavender flowers, large, elephant-ear-sized leaves, and extraordinary cash value. The major commercial market is with Japan. Paulownia is used to make furniture, gift boxes, bowls, toys, clogs, handicrafts, and musical instruments. The wood is also used for traditional products such as construction lumber, plywood, veneer, and charcoal.
A picture would help... or you could try <marthastewart.com> she has a plant encylcopedia link at the bottom of the page if you search for gardening...
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