Ok everyone, this is my first post so be gentle. lol I landscaped a new restaurant this spring. Out of the 10 Foster Hollies(ball@burlapped, 5to 7ft) i installed by hand(ouch) all have died except 3. The owner ignored my watering instructions and they have been 4 months now without any water except for the occassional rainfall. Should the replacement of these be my responsability?