i read they have exstensive roots which will travel to get to water so never plant near water pipes or drains,hope this helps

Thanks Sanbaz

But I really need some measurement.

i read up and it just said extensive so thats means they grow long and deep, maybe you can find something else on web, no good for a small garden i would say, so unless you have a big garden i wouldnt go there

Thanks again

Have lawn 45 ft x 20 ft. wanted it in centre. So it seems O.K.

good luck with that anyway ;o)