We've had this tree / weed spring up in the path in our backyard - its now about 3 or 4 foot high with a thin trunk. The leaves are long and thin - most are light green, some are red or mottled red. The leaves have a rather unpleasant smell to me, but I can't put my finger on what the smell is. Does anyone have any idea what it is? Do we throw it out or transplant it?