I don't think there were any other threads about it.

Now there are two parsonage garden designers in the family! :-) The general claimed the credit earlier for the kitchen garden, but now the narrator gives Henry the credit for the pleasure-ground. It's a relief that he does have some steady down-to-earth activities, not just leaving his curate to take care of most of the parish business while he goes gadding about to Northanger and Bath.