Hello! I am new here, so please excuse me if I post wrong/wrong section etc. I live in an apartment highrise (toronto area) and had a pot sitting out all winter with no plants etc ever in it. In May I saw a tiny plant starting to grow. The only one. I have since taken it inside and am nursing it. The leaves are long and pointed, it is growing quite quickly. It also has a new bud growing at the very top. Is this a weed,plant,tree??? Thank you!
Might be a Smartweed, Polygonum species. http://www.weedinfo.ca/weed.php?w=POLPE http://www.uky.edu/Ag/IPM/scoutinfo/weeds/smartwd.htm