By Nimvo
United States 
There is this plant that has started growing in my garden and does not resemble any plants that I already have... what plant is it? Is it harmful to other plants around? Or should I let it grow...Nimit Vora
7 Apr, 2017
Answers
It's a Castor Bean seedling (Ricinus communis)
7 Apr, 2017
welcome to GoY
are there any large trees nearby that have a similar leaf shape. it reminds me of a maple leaf but the seed leaves look wrong.
At this early stage I'd lift it and put in a pot and then wait and see unless one of you country folk can positively identify it.
7 Apr, 2017