Hedgerows play a significant part in the action of the Long Walk (ch. 10). I've got an interesting footnote on Austen and hedgerows:

Austen's description of this hedgerow - with its channel "down the centre" - is undoubtedly drawn from childhood recollections of the hedgerows around the Hampshire village of Steventon, where she grew up. According to her nephew James Edward Austen-Leigh, "the chief beauty of Steventon consisted in its hedgerows. A hedgerow, in that country, does not mean a thin formal line of quickset, but an irregular border of copse-wood and timber, often wide enough to contain within it a winding footpath, or a rough cart track."

In January 1813, as she worked on Mansfield Park, Austen wrote to Cassandra to ask if she could "discover whether Northamptionshire is a Country of Hedgerows," leading several critics to speculate that the device in Persuasion of the heroine's overhearing a conversation might have originally been intended for Mansfield Park, where (presumably) Fanny would overhear a conversation between Edmund and Mary. (Austen-Leigh, Memoir, 23; Austen, Letters, 202).