[Ag-eq] Honey locusts

[Jewel]

This is a variety of tree that I have been anxious to grow for many years, but until a week ago, I 
hadn't been able to find a nursery that had them. but now I have and am getting 4 seedlings.
However, unless I am fortunate enough to set up a new record for longevity, it is unlikely, though 
not impossible, that I will see them through to their maturity.
I have very bad luck at persuading vegetables to frow for me, but, to date, the majority of trees 
that I have planted have done very well.
I see, from the web, that honey locusts grow to a height of 20m: 66 feet or thereabouts.  I don't 
want to plant them, unnecessarily, far apart nor do I wish to overcrowd them, so if any of you have 
had H L, what did you find was the optimum separation?

           Jewel