Hi, we have decided to opt for some low maintenance borders and have planted a mix of red robin and Eucalyptus Azura. We have since been told the dangers of how the roots grow on eucalyptus and wanted to know if this variety is as bad as they do span away from the house, but the nearest one is only about 10 feet from our house. I have read a few articles saying it’s root system is much less aggressive - is that true? We have also staggered them between the red robins rather than planting in a straight line in line with them - will that look odd when they mature? Many thanks in advance for any advise!