Which tree for my garden?
I moved into my house 2.5 years ago, and there was a beautiful large Sunburst Honey Locust in the centre of the border (approx 20 m tall). Unfortunately it has died since we moved in (not sure if it was something I did?!), so we have removed it. I'm looking for something to replace it with, but I'm really worried about choosing the wrong tree as it is a central location in the garden, so I really don't want something that will cause problems.
My requirements are:
(1) roots won't disturb the perennials alongside it in the border, or the lawn next to the border;
(2) will be able to compete with other plants around it
(3) should cast dappled shade rather than deep shade
(4) should grow tall enough (eventually) that the bottom branches will be well above head height (e.g. bottom branches about 8 feet or so).
(5) an attractive tree!
The gleditsia clearly worked well and in an ideal world I'd replant the same, but that doesn't seem like a good idea seeing as the original one died! My original ideas were eucalyptus (although I think the roots may be too shallow), acer (may not grow tall enough in the long run) or Gingko biloba (not sure if this would create too deep a shade though). So now I am going round in circles trying to work out what would work in the space! Any suggestions would be most welcome!