Q.Can Oleander plant be divided
Can an Oleander plant be divided and, if so, when is the best time of year? I have an Oleander that could be divided into two parts.

I do not think that oleanders can be easily divided in this manner due to their dense root systems. You can, however, air layer oleander plants to get multiple plants off of one. More information on layering can be found at the following links:
https://www.gardeningknowhow.com/garden-how-to/propagation/layering/air-layering-plants.htm
https://bit.ly/1yet0bS