we've got a moptop robinia located about 1- 1.5 metres from the house foundation. a nursery worker has put the fear of total house destruction and suckers coming up dozens of metres from the parent plant if we disturbed the soil around this tree, that if we stop watering it the roots will seek out water where it finds it (i.e. the sewerage pipes under the foundation) and recommends we poison it and remove it ASAP. She said it was only a matter of time before this tree was declared a noxious weed here in Western Australia!
I'm really interested in others' opinions and experiences about this. Is there reason for us to worry? Are the roots invasive to the house foundations?
thanks very much!